Solve the Problem $11 \mathrm { ft }$ Long And $22 \mathrm { ft }$

question 25

Multiple Choice

Solve the problem.
-A swimming pool has a rectangular base $11 \mathrm { ft }$ long and $22 \mathrm { ft }$ wide. The sides are $5 \mathrm { ft }$ high, and the pool is full of water. How much work will it take to lower the water level 2 feet by pumping the water out over the top of the pool? Assume that the water weighs $62.4 \mathrm { lb } / \mathrm { ft } ^ { 3 }$ . Give your answer to the nearest $\mathrm { ft } \cdot \mathrm { lb }$ .

• A) 188,760 ft · lb
• B) 15,101 ft · lb
• C) 30,202 ft · lb
• D) 377,520 ft · lb

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