SOLUTION: A rectangular swimming pool is 50 ft. wide, 100 ft. long, and 10 ft. deep. The pool will be filled to a line 2 ft. from the top. The water company charges $2.25/1000 foot cubed. Ho

Algebra ->  Systems-of-equations -> SOLUTION: A rectangular swimming pool is 50 ft. wide, 100 ft. long, and 10 ft. deep. The pool will be filled to a line 2 ft. from the top. The water company charges $2.25/1000 foot cubed. Ho      Log On


   

Question 850642: A rectangular swimming pool is 50 ft. wide, 100 ft. long, and 10 ft. deep. The pool will be filled to a line 2 ft. from the top. The water company charges $2.25/1000 foot cubed. How much does it cost to fill this pool?
Answer by josgarithmetic(39616) About Me  (Show Source):
You can put this solution on YOUR website!
Try to identify specific steps for everything about this problem.

Here is one method.
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Two feet from the top empty means 10-2=8 feet filled depth.
Volume filled is 50%2A100%2A8%2Aft%5E3.
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Price from water company is 2.25%2F1000 dollars per cubic foot.
Cost is highlight_green%28%2850%2A100%2A8%2Aft%5E3%29%282.25%2F1000%29%28dollars%2Fft%5E3%29%29
5%2A8%2A2.25%2Adollars
40%2A2.25
highlight%2890%2Adollars%29