What is the volume of a sphere with a surface area of 1296 pi inch squared?

surface area sphere = 4πr²

→ r = √(surface_area/4π)

= √(1296π in²/4π)

= √(324 in²)

= 18 in

Volume sphere = 4/3 πr³

= 4/3 π (18 in)³

= 7776π in³