You are going to construct a cylindrical above-ground swimming pool in your backyard to practice your sidestroke for the Kennett Games 2016. Minimize the amount of material needed to construct the pool if you want its volume to be 512Ï€ cubic feet.
a) 4Ï€ ft
b) 8Ï€ ft
c) 16Ï€ ft
d) 32Ï€ ft