A cylindrical tank is lying horizontally on the ground, its diameter is 16 feet, its length is 25 feet, the depth of the water in the tank is 5 feet. How many gallons of water are in the tank? How many more gallons of water will it take to fill in the tank?
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A cylindrical gasoline tank is 50 ft high and has diameter 70 ft. How many gallons of gasoline will the tank hold if there are 7.5 gallons in 1 ft3?