The length of a rectangle is 3 times the width if the area is 147 what is the perminer

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asked Aug 18, 2018 75.4k views

1 Answer

Mprivat · Answer 1 · 2018-08-25T10:17:18+0000

Formula for are of a rectangle:
A =L * W
1st isolate W
147 = 3W * W
147 = 3W^2
divide 147 by the by 3 on bot sides
29 = W^2
get ride of the square by square rooting on both sides
7 = W

2nd find the perimeter
P = 2(7) + 2(21)
P = 14 + 42
P = 56

The length of a rectangle is 3 times the width if the area is 147 what is the perminer

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