Please explain each step if you can. Thank you very much.

8. A hemispherical tank has a radius of 3 ft and it is lled with water to a height of 2 ft. (the density of water is 62.4 lbs/ft3). A motor is used to pump the water 5 ft above the top of the tank. (a) Copy the gure and clearly mark the origin and how mea surements are made. (b) Setup an integral to nd the work required to empty the tank by pumping all the water 5 ft above the top of the tank