a). Calculate the work required to pump all of the water out over the top of a full tank. The shape of the tank is an inverted pyramid of height 12 meters whose base is a square of side 4 meters.
b). Calculate the work required to fill a tank full of water through a hole in its bottom. The shape of the tank is an inverted pyramid of height 12 meters whose base is a square of side 4 meters.
c). Compare the ratio of the work found in part b to the work found in part a.