Find the work done in pumping the water out of the top of a

Question

Find the work done in pumping the water out of the top of a cylindrical tank 3.00 ft in radius and 10.0 ft high, given that the tank is initially full and water weighs 62.4 Ib/ft³ (Hint: If horizontal slices dx ft thick are used, each element weighs  lb, and each element must be raised 10 - ft, if is the distance from the base to the element (see Fig. 26.70). In this way, the force, which is the weight of the slice, and the distance through which the force acts are determined .Thus, the products of force and distance are summed by integration.)