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pi r^2 h is used to determine the volume of a cylinder because when determing the area of a shape you first have to determine the area of the the base of the object and then multiply it by the height. The base of a cylinder is a circle and to find the area of a circle you use pi r^2 and hence the reason why pi r^2 is used to find the volume of the cylinder.

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โˆ™ 2009-10-20 15:57:48
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Q: Why is the volume pi r h for a cylinder?
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What is the formula for calculatin the volume of a cylinder?

Cylinder volume = h*pi*r*r. where h = the height or length of the cylinder and r = it's radius.


How do you find the radius of a cylinder when only given the volume and the height?

Volume = pi r^2 h so r^2 = volume/pi h r = sqrt (v/pi h)


What is the ratio of volume of a cone to the volume of a cylinder with same ratio?

It is 3:1. This is because volume of a cone is pi/3*r*r*h while vol of a cylinder is pi*r*r*h.


Formula to find volume of the cylinder?

The volume of the cylinder equals pi r^2 h


Just tell you the proof that volume of cone is equal to three times the volume of cylinder?

Volume of cylinder = PI r^2 h where r = radius and h= height Volume of Cone = (1/3) PI r^2 h where r=radius and h= height Therefore, the volume of a cone is one-third of the volume of a cylinder.


The radius of a cylinder is four times the height write an equation for the volume of the cylinder as a function of its height?

Volume of a cylinder = PI r^2 h, where r is the radius and h is the height r = 4h (given) Substitute r=4h in the formula Volume = PI (4h)^2 h V = 16 PI h^3


Formula for cylinder?

Surface Area of a Cylinder = 2 pi r 2 + 2 pi r h Volume of a Cylinder = (2 pi r 2) height


Volume of a cylinder into cubic feet?

The volume of a cylinder is pi*r^2*h and, if the radius (r) and height (h) are expressed in feet then the volume is in cubic feet.


What is the formula for the volume of a cylinder?

The volume of a cylinder is simply the area of the circular base times the cylinder's height. Volume of a cylinder = ╥ r² h (pi x radius squared x height) ╥ (Pi) ≈ 3.14 r = radius of the base circle, and h = height of the cylinder --- V= pi r squared times height Volume in cubic units = pi*radius2*height


What expression represents the volume of a cylinder whose height is equivalent to the length of the radius?

The volume of a cylinder is PI * R2 * H If H is the same as R, then it is PI * R3 (Or PI * H3)


What is the volume of a cylinder?

Volume of a cylinder is pi x radius squared x height. Volume (V) of a cylinder is V=pi*r2*h where r is the radius of the cylinder and h is the height of the cylinder. Value of pi=3.14 (The pi x r2 is the area of a cross section of the cylinder.)


How do you find the radius of half a cylinder when given the volume and height?

from v and h , find r then find r/2. * * * * * That will not work! The formula for the volume of a whole cylinder is V = pi*r2*h So the volume of half a cylinder is V = 1/2*pi*r2*h This give r2 = 2V/(pi*h) and so r = sqrt[2V/(pi*h)]

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