For a solid cylinder set inner radius equal to 0. Now the length of the pipe must be determined. If the diameter is known then divide the diameter by 2 to get the radius.
0 1 2 3 4 5 F.
Gal ft³ in³ m³ cm³ liter. Where R - external radius and r - internal radius. Volume p d 2 4 h Thus the volume of a pipe is equal to pi times the pipe diameter d squared over 4 times the length of the pipe h. This is the common equation for a cylinder.