# Math Help - How many Gallons are in this size and length Pipe , please ?

1. ## How many Gallons are in this size and length Pipe , please ?

I have a 300' pipe that is .675" i.d. How many U.S. Gallons does this contain ? Thanks.

2. ## Re: How many Gallons are in this size and length Pipe , please ?

The volume of a prism (a cylinder is a prism) is it's cross-sectional area multiplied by it's length.

For a cylinder the cross sectional area is a circle: $V = \dfrac{\pi d^2h}{4}$ where d is the diameter and h the height/length of the pipe.

Make sure your units are consistent