The base of a rectangular tank measures 9 ft by 18 ft. The tank is 17 ft tall, and its top is 10 ft below ground level. The tank is full of water...

The base of a rectangular tank measures 9 ft by 18 ft. The tank is 17 ft tall, and its top is 10 ft below ground level. The tank is full of water weighing 62.4 lb/ft3 . How much work does it take to empty the tank by pumping the water to ground level? Give your answer to the nearest ft-lb.