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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16-12-2016
Mathematics

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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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JcAlmighty JcAlmighty · Answer 1 · 2016-12-20T20:37:36+01:00

JcAlmighty JcAlmighty

20-12-2016

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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