Solve the Problem $7 \mathrm { ft }$ By $14 \mathrm { ft }$

question 103

Multiple Choice

Solve the problem.
-The base of a rectangular tank measures $7 \mathrm { ft }$ by $14 \mathrm { ft }$ . The tank is $17 \mathrm { ft }$ tall, and its top is $10 \mathrm { ft }$ below ground level. The tank is full of water weighing $62.4 \mathrm { lb } / \mathrm { ft } ^ { 3 }$ . How much work does it take to empty the tank by pumping the water to ground level? Give your answer to the nearest $\mathrm { ft }$ ' $\mathrm { lb }$ .

• A) 883,646 ft · lb
• B) 3,690,523 ft · lb
• C) 883,816 ft · lb
• D) 1,923,230 ft · lb

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