The length of a rectangle is 3 times the width. If the perimeter is 40 cm, find the length and width. help me please Pre-Algebra

asked May 24, 2020 126k views

3 votes

The length of a rectangle is 3 times the

width. If the perimeter is 40 cm, find the
length and width.

help me please Pre-Algebra

4.7k points

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3 votes

Answer:L= 3W

Perimeter = 2(l+w) = 40

2(3w+w) = 40

2*4w = 40

8w =40

w = 5

l = 3*5 = 15

Hope I helped

Danizavtz answered May 30, 2020

5.2k points

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