Question

A childs wading pool is 5 feet with a height of 1 foot. How much water is needed to fill the pool?

Answer 1

Volume is the $\pi r^2h$
So you have the volume is 19.64 f^3
But to get the amount of water from that you have to take 7.48 Gallons of Water Per Cubic Foot. 
So 7.48x19.64=146.9 gallons

Answer 2

Volume= length times width times height