A sphere of radius 4 feet is filled with water pg = 62.5 lbs / ft ^ 3 . How much work is done pumping the liquid to a point 2 ft above the top of the sphere?

Hint: Put the origin of your x-y coordinates at the center of the sphere. If you have trouble with the integral, then use the same centroid method of problem #9 instead.

radius = 4 ft