1. A cylindrical reservoir of diameter 4 feet and height 6 feet is half full of water weighing 62.5 lpbvsfs. The work done, in ft-lb, in emptying the water over the top is equal to (4 points possible) 2. The volume of the solid obtained by rotating the region bounded by X = Z, x = 0, y = 9, about the yaxis is . (4 points possible)