Determine the distance z to the center of mass of the casting that is formed from a hollow cylinder having a density of 3.2 Mg / m 3 and a hemisphere having a density of 3 Mg / m 3. The total surface area of a hollow metal tube, open at both ends of external radius 8 cm and height 10 cm is 338 cm2. The Weight of a Cylinder calculator computes the weight (mass) of a cylinder based on the radius of the base of the cylinder (r), the height of the cylinder (h), and the density of the material (mD). 1. cm and height 7 cm. 40 per m. b)<a c) >b A cylinder of radius T and length L has the volume V = tr'L and lateral . Let us take a hollow cylinder of outer radius r1, inner radius r2 and height as h. The hollow cylinder is the resultant cylinder we get after cutting a smaller cylinder from the bigger cylinder. The net charge inside the surface of any conductor is zero, and the net charge on the outer shell is the sum of the charges on the inside and outside surfaces: Q 1 = 5 q , so Q 2 = - Q 1 = - (5 q ) = - 5 q . Example 1: Find the volume of a hollow cylinder having inner radius = 6 cm, outer radius = 8 cm and height = 7 cm. The line joining the centers of the bases is called the axis of the cylinder. The Sunbathing Calculator will tell you when's the time to go back under an umbrella not to suffer from a sunburn! Divide the cylinder's mass by its volume to get its density as = (500 g)/ (785.40 cm3) = 0.6366 g/cm3. The bases are consistent and parallel to one another. Density is the ratio of mass to volume. Now, that we have understood the formula and method to find the volume of a hollow cylinder, let us have a look at a few solved examples in the next section. Inner radius of the hollow cylinder (r) = 6 cm The shape formed at the bottom of a hollow cylinder is called an annular ring, i.e. Weight = Volume x density = 50265.48 x 0.8 = 40212.39 gms Lateral surface area = 2 ( R + r) h = 2 ( 8.5 + 7.5) 1000 = 2 16 1000 = 100530.96 c m 2 . Step 2: Substitute the given values in the volume of hollow cylinder formula V = (R 2 -r 2 )h. Step 3: Finally, represent the answer along with the unit. The inside and outside of the tube have the same scattering length density and the tube itself is of uniform SLD. To find the volume of the hollow cylinder in liters, we can convert the value in liters using the below conversion, i.e., formula for the Mean Density of a cylinder, Identify possible substances based on the density, Compute the moment of inertia of a cylinder shaped object based around the central axis, Compute the moment of inertia of a cylinder shaped object around the end of the cylinder, Compute the moment of inertia of a cylinder shaped object perpendicular to the central axis. 4. The height h is the perpendicular distance between the 2 bases. Inner radius of the hollow cylinder (r) = 6 cm Therefore, the volume gets doubled when the height of the hollow cylinder is doubled. ounce per cubic inch) via the pull-down menu. Calculates the form factor for a monodisperse, hollow, right circular cylinder (or a tube). The radius r of a cylinder is the radius of the base. It's the outer diameter and the inner diameter is 10cm and 6cm respectively. INSTRUCTIONS: Choose units and enter the following: Density of a Cylinder (): The calculator returns the mean density () of the cylinder in kilograms per cubic meter. Subaru EJ20G Engine . Step 2: Apply the formula to calculate the volume of a hollow cylinder, Volume of hollow cylinder = (R 2 - r 2) h Step 3: Represent the answer with units. Given: Radius of the circular well (r) = 2.1 m, depth (h) = 21 m. Here we need to plaster the inner surface of the well which is the sum of Curved surface area and Area of the base. In measurement, the volume of the hollow cylinder is expressed in cubic units, like m3, cm3, ft3, in3, yd3, etc. 11/21/2004 Example A Hollow Tube of Current 5/7 Jim Stiles The Univ. The lateral surface area of a hollow tube is 4224 cm. Sorry, JavaScript must be enabled.Change your browser options, then try again. Hollow Cylinder Mass Moment of Inertia Based Equation. Check out 86 similar classical mechanics calculators . On simplifying we get h (r1 - r2). Math will no longer be a tough subject, especially when you understand the concepts through visualizations. When there is an external field present, produced by the charge on the outer surface of the inner cylinder, electric field inside the outer conductor must be 0 because of electric equilibrium. What do you mean by a hollow cylinder? the mD of water is 1,000 kg/m3). A solid surface produced by a line moving parallel to a fixed line, while its end describes a closed figure in a plane is called a cylinder. Find the height of the cylinder. If the outer radius = 14 cm and inner radius = 12 cm. The Surface Area of a Hollow Cylinder calculator computes the surface area of a hollow cylinder based on the dimensions. - Learn Definition and Examples, Nonagon : Learn Definition, Types, Properties and Formulas, Unit Cubes: Learn Definition, Facts and Examples, Trigonometry - Formulas, Identities, Functions and Problems, CBSE Class 9 Maths Number Systems Formulas, A hollow cylinder is made up of two thin sheets of rectangle having a length and breadth. A cylinder is basically a three dimensional object having a curved outer surface. Sorry, JavaScript must be enabled.Change your browser options, then try again. A hollow cylinder is a cylinder which is vacant from inside and has some difference between the internal and external radius. Example 2: A hollow cylinder copper pipe is 21dm long. (40 291.06) = Rs. How to find the surface area of a hollow cylinder? NOTE: Identify possible substances based on the density byCLICKING HERE. Radius 1 is a radial line from the focus to any point of a curve for 1st Radius, Radius 2 is a radial line from the . Related A long, hollow conducting cylinder is kept coaxially inside another long, hollow conducting cylinder of larger radius.Both the cylinders are initially electrically neutral.a)A potential difference appears between the two cylinders when a charge density is given to the inner cylinder.b)A potential difference appears between the two cylinders when a charge density is given to the outer . Step 1: Identify the given dimensions of the hollow cylinder, such as inner radius "r", outer radius "R" and height "h" and make sure that all have the same units. A cylinder can be observed as a set of circular disks that are stacked on one another. This is for an open ended cylinder with no top or bottom.Open Ended (no top or bottom). Later on it has been cut along its height and formed a rectangular sheet of width 33 cm. The Mass or Weight of a Hollow Cylindercalculator computes the mass of a hollow cylinder based on the dimensions and the density. it is a region bounded by two concentric circles. As long as you measure the cylinder's height h perpendicular to its base, the formula for the volumes of oblique and right cylinders are the same: V = r2h. The mass is calculated based on the volume of the cylinder and the density of the material. Also, the radius of both the cylinders can be r1+r2. The three objects are released from rest at the same height and roll without slipping. It floats in water. Likewise, what is the surface charge density outside the hollow cylinder? In this article, let's discuss some basic concepts: Density is the amount of mass of a substance per unit volume. 1 Litre = 1000 cubic cm or cm3 A hollow cylinder is one that is empty from the inside and has some difference between the internal and external radius. What is the surface charge density inside the hollow cylinder? The base area of the hollow cylinder is the area of the annular ring of the cylinder. If you are given the diameter instead, remember to take half of it. Numbers in English - Pronunciation, Reading and Examples, Printable Numbers from 1 to 10 - Learn with Examples for Kids, Expanded Form of Decimals and Place Value System - Definition, Examples and Uses, What are Halves? What do you mean by the cross sectional area of a hollow cylinder? Total surface area of the pipe = Lateral surface area of pipe + Area of bases = 100530.96 + 100.53 = 100631.49 c m 2 . Find the thickness of the ceramic cylinder. A cross section of a hollow cylinder is the two end portion bounded by two concentric circles. Verify your results using our density of a cylinder calculator. To use this online calculator for Volume of hollow cylinder, enter Height (h), Radius 2 (r2) & Radius 1 (r1) and hit the calculate button. Are you sure that you use enough? The volume of a hollow cylinder is defined as the three-dimensional space enclosed by it. This old-fashioned view is utilized in fundamental utilizations of geometry, yet the unpredictable numerical perspective has moved to the endless curvilinear surface and this is the manner by which a cylinder is currently all around characterized in a few present-day parts of geometry and topology. Cylinder can be of two types - solid cylinder and hollow cylinder. Volume of hollow cylinder = R2 h - r2 h = (R2 - r2) h cubic units. Find the volume of copper used in manufacturing the pipe. Related A long , hollow conducting cylinder is kept coaxially inside another long, hollow conducting cylinder of larger radius. The Density of a Cylinder calculator computes the mean density () of a cylinder based on the mass (m),height (h) and radius (r). Express your answer to three significant figures and include the appropriate units. In this section, we will discuss the volume of a hollow cylinder along with solved examples. If you're uncertain about the cylinder's volume, you can use its dimensions instead. The density of water is 1 gram per milliliter, so shouldn't the cylinder sink? General Engineering and Design Data Menu Industrial Electric Motor Application, Design and Installation Menu . It then uses the formula for mass from volume and density: M = V mD where: V is the volume mD is the mean density. Now image a Gaussian cylinder that goes inside the outer conducting cylinder. The density depends upon the unit in which the mass or weight is expressed, and upon the unit of volume used. It can be viewed as a group of circles kept on top of each other. The charge distribution for an infinite thin, hollow cylinder is the same as for a conducting one, that is because of symmetry the charge will spread evenly on the thin shell. Your answer is right but the cylinder is of infinite length so you have to express the Electric field in terms of aerial charge density, not in terms of total charge. Derivation of the Volume of a Hollow Cylinder. A charge of 6 10-8 C is placed on the hollow sphere. For example: A cylindrical tube having a volume of 1000 cm3 is equivalent to having a capacity of 1L. 1. A long charged cylinder of linear density $ + {\lambda _1}$ is surrounded by a hollow coaxial conducting cylinder of linear charge density $ - {\lambda _2}$ use Gauss's law to obtain expressions for the electric field at a point (i) in the space between the cylinders and (ii) outside the cylinders The weight of a hollow pipe cylinder is determined by the volume multiplied by the density where the density is given in mass per unit volume. Density of cylinder is = mass/volume = 176 / 88 = 2 kg/m3 Similarly, the density of cylinder g/cm3is = 2 x 1000/100 = 20 g/cm3. A cylinder is a solid that is common to see in regular day to day existence, for example, a straw. The Mass or Weight of a Hollow Cylinder calculator computes the mass of a hollow cylinder based on the dimensions and the density. Determine the distance to the center of mass of the cast- ing that s formed from a hollow cylinder having a density of 8 Mg/m3 and a hemisphere having a density of 3 Mg/m 20 mm40 mm 120 mm 40 mm This problem has been solved! The formula for density is: The formula for the Mean Density of a cylinder is: In this case, the radius (r) and height (h) are used to compute the volume of the cylinder (V = rh). Verify this result using our density of a cylinder calculator. mD = Mean Density of cylinder material. Outer radius of the hollow cylinder (R) = 8 cm However, this can be automatically converted to other volumetric density units (e.g. See Answer. Find the volume of copper used in manufacturing the pipe. In the event that you dismantle it, you discover it has two closures, called bases, that are normally roundabout. A line joining the center of each of the 2 bases. The cylinder is a three-dimensional shape that has a circular base. Use our Darcy's law calculator to calculate the fluid flow rate through a porous medium. It then uses the formula for mass from volume and density: The mean density(mD) of many common substances, elements, liquids and materials can be found by clicking HERE (e.g. Density, lb/in 3: g = Gravitation constant 386 in./sec 2: Link to this Webpage: Copy Text to clipboard. . Step 1: Note down the known dimensions of the hollow cylinder and check that they should have the same units. In other words, it is a cylinder that is empty from the inside and has some thickness at the peripheral. The thermal expansion calculator finds the change in length or volume of a material subject to extreme temperatures. E = 0 r R Share Cite Improve this answer Follow edited Nov 12, 2020 at 4:16 Young Kindaichi 11.2k 2 14 45 answered Nov 12, 2020 at 3:52 Devraj 1 Add a comment Your Answer Therefore, the surface area of the cylinder is equal to the surface area of both the rectangles which is equal to 2( r1 + r2)( r1 r2 +h). (Use = 22/7), Given: of EECS and therefore the magnetic flux density in the non-hollow portion of the cylinder is: () 22 0 0 r for 2 b aJ b c =<< B >c Note that outside the cylinder (i.e., >c), the current density J()r is again zero, and . A cylinder is the limiting case of a prism. The density of a cylinder is 1.02 grams per cubic centimeter. It will be given as; dV = dA h Here the dA is considered as the area of the ring on top. (Use = 22/7). Solution: Volume of the given hollow cylinder = (R2 - r2) h = (22/7)(302 - 202)(21) = 66(30 - 20)(30 + 20) = 33,000 cubic units. For example, if AB is the outer diameter of the circle or ring which is known as the base of a hollow cylinder and CD is the inner diameter then AC (or BD) is the thickness of the hollow cylinder. 11642.40. How to use this cylinder density calculator? A hollow cylinder copper pipe is 21dm long. Water has a density of 1 g/mL at standard atmospheric pressure and a temperature of 4C. Where. Volume of a cylinder = Base area Height = ( R2) h cubic units The density of the material is derived from its specific gravity. Where. The inner radius of a circular well is 2.1 m and its depth is 21 m. Find the cost of plastering the inner surface of a circular well at the rate of Rs. Moth the cylinders are initially electrically neutrala)No potential difference appears between the two cylinders when same charge density is given to both the cylinders.b)A potential difference appears between the two cylinders when a charge density is given to the . Example 2: The volume of a hollow cylinder is 440 cm3. cm, the base ring area is 115.5 sq. Using Gauss's law, find the electric field at: a) You must specify explicitly and draw the Gaussian surfaces, used in parts (b) and (c). DESCRIPTION. In engineering and scientific work, density is generally expressed in grams per cubic centimeter. It is given as; dm = dV Since we have mentioned dV in the above equation, we have to calculate it. How to find the volume of a hollow cylinder? it is a region bounded by two concentric circles. The volume of a hollow cylinder is directly proportional to the height of the hollow cylinder. Knowns: Central solid conducting cylinder of radius 0.013 m and charge 6 nC/m. Breakdown tough concepts through simple visuals. A hollow cylinder is made up of two thin sheets of rectangle having a length and breadth. You may also optionally specify the material the cylinder is constructed from to calculate the mass. The calculator also returns the volume in liters, which can also be automatically converted to compatible units via the pull-down menu. Find the weight, lateral surface area and total surface area of a steel pipe whose interior and exterior diameters measure 15cm and 17cm respectively, and length 10m; one cubic cm of iron weighing 0.8gm. Here is how the Volume of hollow cylinder calculation can be explained with given input values -> 942.4778 = pi*12* (13^2-12^2). Hence, their densities will also be the same. To calculate this answer yourself, follow these steps: Calculate the cylinder's volume using V = r2h to get V = (5 cm)2 (10 cm) = 785.40 cm3. While a hollow cylinder is defined as a cylinder that is empty from the inside and has some difference between the internal and external radius. To derive a cylinder density formula, let's start by calculating its volume: Combining this with the general formula for density we've seen in the previous section, we get the formula for cylinder density: To calculate the density of a cylinder, follow these steps: This density of a cylinder calculator is easy to use. 2. If the cylinder seems to be made up of solid circles with no space in between then it is called solid cylinder or simply cylinder and if the cylinder seems to be made up of circular rings (hollow circles) then it is called hollow cylinder. Omni's not-flat Earth calculator helps you perform three experiments that prove the world is round. However this can be automatically converted to other mass and weight units via the pull-down menu. To calculate the volume of a hollow cylinder, you can either subtract the volumes of the two cylinders that create the shape or use the following formula: VH = V-V = (R - r) h Where: VH is the volume of the hollow cylinder, and V and V are the cylinders' volumes; R and r the radii of the cylinders; and h their height. It is important to use the perpendicular height ('altitude') when we calculate the volume of a slanted cylinder. 40\], Cost of 291.06 m2 of well = Rs. The volume of a hollow cylinder having outer radius, 'R' and inner radius, 'r' can be written as the volume of a solid cylinder of radius, 'R' and height, 'h' minus the volume of a solid cylinder of radius, 'r' and height, 'h', Therefore, Volume of a hollow cylinder = External cylinder volume - Internal cylinder volume Outer radius of the hollow cylinder (R) = 8 cm Other common units used are liters(l) and millimeters(ml). If you somehow managed to 'unroll' the cylinder you would locate the side is really a rectangle shape when straightened out. Find the perimeter of a rectangular sheet? The formula for calculating the volume of a hollow cylinder is equal to the volume of the bigger solid cylinder - the volume of the smaller solid cylinder which is equal to r, CBSE Previous Year Question Paper for Class 10, CBSE Previous Year Question Paper for Class 12. Find the cost of plastering the inner surface of a well at the rate of Rs 30 per m2, if the inner diameter of the well is 2.8 m and its depth is 14 m. A hollow cylinder copper pipe is 21cm long. Therefore, the thickness of the hollow cylinder is known as the cross sectional area of the hollow cylinder. Given: formula for the mass of a hollow cylinder. To calculate the volume of a hollow cylinder with a given outer radius, 'R', inner radius, 'r', and height, 'h', we can follow the steps given below, Example: How to find the volume of a hollow cylinder having inner radius = 20 units, outer radius = 30 units, and height = 21 units? The 2D shape formed at the bottom of a hollow cylinder is called an annular ring, i.e. The shift in the straightforward meaning has created some uncertainty with terminology. Real Estate Marketing; Aerial Photography & Videography; 360 Panoramic Photography & Videography; Nonprofit & Community Videos; Event & Moment Experience In other words, it is a cylinder that is empty from the inside and has some thickness at the peripheral. It has two modes of calculation to suit your needs: The following is a useful collection of other relevant density calculators at your disposal: 636.6 kg/m3 is the density of this cylinder. Do you always remember to put on sunscreen before going outside? How to Find the Volume of a Hollow Cylinder. It is given by: The SI unit of density is kilogram per cubic meter (kg/m3\text{kg}/\text{m}^3kg/m3), while its imperial unit is pound per cubic feet (lb/ft3\text{lb}/\text{ft}^3lb/ft3). \[\text{The height of the cylindrical pipe is h} = 21 dm = 210 cm\], \[\text{Thus, External radius}, R = \frac{10}{2} = 5cm\], \[\text{Internal radius}, r = \frac{6}{2} = 3 cm\], The volume of the copper used in manufacturing the pipe, = \[\text{Volume of external cylinder} - \text{volume of an internal cylinder}\], = \[\frac{22}{7} [5^{2} - 3^{2}] \times 210 = \frac{22}{7} \times 16 \times 210\]. Total Surface Area of Hollow Cylinder is the amount of two-dimensional space occupied by a given object and is represented as SA = 2*pi* (r1+r2)* (r1-r2+h) or Surface Area = 2*pi* (Radius 1+Radius 2)* (Radius 1-Radius 2+Height). The volume of a cylinder is the total capacity of the cylinder, thus signifying the amount of any material that can be immersed in it or the amount of any material it can hold. Three objects of uniform density (a solid sphere, a solid cylinder, a hollow cylinder, or a ring), are located on top of an inclined plane. Also, the radius of both the cylinders can be r, . The formula for the mass of a hollow cylinder is: `M = pi * h * ( r^2 - (r-t)^2) * mD` where: The Mass of a Hollow Cylinder calculator computes the volume of the outer cylinder and subtracts the volume of the inner core. Yes, it should sink. See the answer please this Q with every single step Show transcribed image text Expert Answer Transcribed image text: 9-65. From the definition, the volume of the cylinder = Base Area Height. These circles are in the form of rings called concentric circles. The formula for density is: = m/v The formula for the Mean Density of a cylinder is: = m/ (rh) where: is the density of the cylinder m is the mass of the cylinder r is the radius of the cylinder h is the height of the cylinder In this case, the radius (r) and height (h) are used to compute the volume of the cylinder (V = rh) . Conclusion Here you are after reading all about the cylinder density and now, no one can stop you from calculating it. Answer in units of nC/m^2. December 31, 2021. Solution for A hollow ball with a diameter of 3.76 cm has an average density of 0.0835 g/cm What force must be applied to hold it stationary while it is . Transcribed image text: The volume charge density of an insulating long hollow cylinder is p. The cylinder is hollow for Ta and the charge is distributed uniformly in a < <b. 3. The formula for calculating the volume of a hollow cylinder is equal to the volume of the bigger solid cylinder - the volume of the smaller solid cylinder which is equal to r1h - r2h. Specific Gravities are available for a variety of metals, plastics and woods. of Kansas Dept. Gauss Law - Applications Area of Hollow Cylinder Density The radius of the cylinder is the radius of its base. Therefore, the surface area of the cylinder is equal to the surface area of both the rectangles which is equal to 2( r, Let us take a hollow cylinder of outer radius r, and height as h. The hollow cylinder is the resultant cylinder we get after cutting a smaller cylinder from the bigger cylinder. To calculate this answer yourself, follow these steps: The density of an oblique cylinder is given by: = m/r2h. The formula to calculate the volume of a hollow cylinder is given as, Volume of hollow cylinder = (R2 - r2) h cubic units, where, 'R' is the outer radius, 'r' is the inner radius, and, 'h' is the height of the hollow cylinder. In other words, volume tells the maximum space that can be occupied by water if the water is poured into the glass. Its outer diameter and inner diameter are 10cm and 6cm respectively. Height of the hollow cylinder (h) = 7 cm, Volume of the given hollow cylinder = (R2- r2) h = (22/7)(82 - 62)(7) = 22(64 - 36) = 616 cm3, Answer: Volume of the given hollow cylinder = 616 cm3. The difference is the volume of the object. The formula to calculate the volume of a cylinder is given as. If a line is perpendicular to the base, the cylinder is called a Right cylinder, otherwise, it is called an oblique cylinder. FAQ What is Volume of hollow cylinder? Volume of the hollow cylinder (V) = 440 cm3, Let h be the height of the hollow cylinder. The calculator also returns the volume of the casing and the volume within the cylinder (inside the casing). 636.6 kg/m3 is the density of this cylinder. For a given hollow cylinder, with both outer radius and inner radius known, its volume can be given by: Volume of a hollow cylinder, V = (R2 - r2) h cubic units Inside the now conducting, hollow cylinder, the electric field is zero, otherwise the charges would adjust. Taking r to be the inner radius, provide an equation in r and use it to state the thickness of the metal in the cylinder. Deducing the Formulae of Areas of a Hollow Cylinder: If R is the outer radius of the cylinder and r is the inner radius of the cylinder, then, (i) Volume (the solid portion) = Volume of external cylinder-volume of internal cylinder, (ii) Lateral surface area = External surface area of a cylinder + Internal surface area of a cylinder, (iii) Total surface area = Lateral surface area + Areas of solid bases, = \[2 \pi h(R + r) + 2 \pi (R^{2} - r^{2})\]. First, let us recall the moment of inertia equation: dI = r 2 dm Here we have to find dm. For example, the volume of glass tells us about the available space inside it. This density of a cylinder calculator is helpful to determine the density of any cylindrical structure, given its mass and volume. A ship is built to float because its average density is less than the density of water. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. INSTRUCTIONS: Choose units and enter the following: Hollow Cylinder Mass(M): The calculator returnsthe mass of the hollow cylinder in grams (g). A hollow cylinder is a cylinder that is empty from the inside and has some difference between the internal and external radius. The Mass or Weight of a Hollow Cylinder calculator computes the mass of a hollow cylinder based on the dimensions and the density. We consider a hollow cylinder, which in cylindrical coordinates ( , , z) is bounded by a curved surface at = a and end caps at z = 0 and z = h. The base ( z = 0) and curved surface are assumed to be grounded, and therefore at potential = 0, while the end cap at z = h has a known potential distribution V ( , , h ). \[\text{Area to be plastered} = \text{Curved surface area} + \text{Area of base}\], = \[2 \times \frac{22}{7} \times 2.1 \times 21 + \frac{22}{7} \times (2.1)^{2}\], \[\text{Cost of} 1 m^{2} \text{of well} = Rs. The piston has a mass of The Mass of a Hollow Cylinder calculator computes the volume of the outer cylinder and subtracts the volume of the inner core. Now we get; dA = (r + dr) 2 - r 2 An ideal gas is enclosed in a cylinder with a movable piston on top of it. The volume of a hollow cylinder is defined as the space enclosed by the shape in a three-dimensional plane. First, note that the two cylinders are both conductors. Register for FREE at http://deltastep.com or download our mobile app: https://bit.ly/3akrBoz to get all learning resources as per ICSE, CBSE, IB, Cambridge &. What is the formula for cylinder density? Volume of the hollow cylinder = 440 = (R2 - r2) h = (22/7)(142 - 122) h = (22/7) 52 h, Answer: Height of the given hollow cylinder = 2.7 cm. The form factor is normalized by the tube material volume ONLY such that P ( q) = scale*< f * f >/Vol + bkg, where f is the . Inner radius of cylindrical shell = 0.0475 m Outer radius of cylindrical shell = 0.067 m Charge of shell = 0 nC/m Qenc = Q1 + Qin Homework Equations (sigma) = Q/A A=2 (pi)rL Weight = Volume x density = 50265.48 x 0.8 = 40212.39 gms, \[\text{Lateral surface area} = 2 \pi (R + r)h\], \[\text{Total surface area of the pipe} = \text{Lateral surface area of pipe} + \text{Area of bases}\]. The total surface area of a hollow ceramic cylinder which is open from both the sides is 4620 sq.