Question: Water in a cylinder of height 10 ft and radius 4 ft is to be pumped out. Find the work required if
(a) The tank is full of water and the water is to pumped over the top of the tank.
(b) The tank is full of water and the water must be pumped to a height 5 ft above the top of the tank.
(c) The depth of water in the tank is 8 ft and the water must be pumped over the top of the tank.