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A vertical right-circular cylindrical tank measures 20 it high and 16 it in diameter. It is full of liquid weighing 62 4 Ib / it . How much the liquid to the level of the top of the tank? Set up the integral that gives the work required, in ft-lb, with y = 0 corresponding to the bottom of the tank. Use limits of integration in (Type exact answers, using x as needed.) The amount of work required is (Round to the nearest whole number as needed.)