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23 September, 09:57

A rectangular pool is 7 feet wide. It is 3 times as long as it is wide. Find the perimeter of the pool.

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  1. 23 September, 11:05
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    The answer is 56 ft

    The perimeter of the rectangle with width w and length l is:

    P = 2w + 2l

    We know:

    w = 7 ft

    l = 3w = 3 * 7 = 21 ft

    P = 2w + 2l

    P = 2 * 7 + 2 * 21

    P = 14 + 42

    P = 56 ft
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