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13-04-2020
Mathematics

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The length of a rectangle is three times it’s width. If the area of the rectangle is 108ft^2, find its perimeter

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MathPhys MathPhys

13-04-2020

Answer:

48 feet

Step-by-step explanation:

If W and L are the width and length, then:

L = 3W

WL = 108

Substitute:

W (3W) = 108

3W² = 108

W² = 36

W = 6

L = 18

Therefore, the perimeter is:

P = 2 (W + L)

P = 2 (6 + 18)

P = 48

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