Question

The diameter of a cylinder construction pipe is 4ft. If the pipe is 21ft long, what is the volume?

Answer 1

263.76 cu. ft.

Explanation:

For a pipe use its length instead of height: pipe volume = π * radius² * length, where radius = inner diameter/2.

Volume = pi x r^2 x l

= 3.14 x 4 x 21