For a cylinder, the cross section is a circle, so the area will be pi r2 (r is the radius of the cylinder).
The volume therefore will be V = pi r2h where h is the height of the cylinder.
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Area of the base x the height.
Find the area of the circular base (pi x r2), then multiply it by the height.
The area of the base is in square inches, or square centimetres.
The volume of the cylinder is in cubic inches, or cubic centimetres.
You compute the area of the cross section (a circle), then multiply the result with the cylinder's height.
Volume of a cylinder = pi*(radius)2*(height) where pi = 22/7
Volume of a cylinder = pi*radius2*height
Pour it into a graduated cylinder and read off the volume.
Volume = (height)(area base)
Volume in cubic feet = cross-section area*length