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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Definitions:

Ocean Water

The saltwater that makes up the oceans covering most of the Earth's surface, distinct from fresh water.

Salinity

The concentration of salt in water or soil, which can influence the distribution of plant and animal species.

Nutrient Inputs

The introduction of essential nutrients into an ecosystem or environment, typically influencing growth and development of organisms.

Estuary

A coastal body of water that connects to an ocean, in which fresh water from the land mixes with salt water.