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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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Q: Why is the volume pi r h for a cylinder?

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Volume of any prism = area of base x height, so volume of a cylinder = 'pi' x r x r x h, where 'r' is the radius and 'h' is the height, and 'pi' is approximately 3.14.

Formula for the volume of a cylinder.

Pi x r² x h

If the radius is r cm and the height is h cm, then Volume = pi*r^2*h cm^3 and Surface area = 2*pi*r(r+h) cm^2

The volume of a cylinder is given by the equation V=2*pi*r*h V=volume r=radius h=height Since the height and volume are given in this case, rearranging the equation will show that r= V / (2*pi*h). With that equation you can find the radius of any cylinder with known volume and height.

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

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

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.

The volume of the cylinder equals pi r^2 h

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.

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

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

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.

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

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

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.)

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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