1. A cylinder tank, diameter 1 feet and length of 6 feet is placed so that its axis is horizontal. How many pound of water will be used in filling it to a depth of 9 inches if water weighs 62.4lb. per cu. ft.?
2. The pyramidal tank shown in the figure has a square base 11.6 ft. on a side and an altitude of 14.8 ft. How many gallons of water are in it when the depth of the water is 5.725 ft.?