SOLUTION: The length of a rectangle is 3 times its width. If the perimeter of the rectangle is 32 cm, find its length and width.

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Question 656791: The length of a rectangle is 3 times its width. If the perimeter of the rectangle is 32 cm, find its length and width.
Answer by shweta(56) About Me  (Show Source):
You can put this solution on YOUR website!
Let 'l' be the length of the rectangle and 'w' be the width of the rectangle
Given:l=3w and Perimeter,P=32 cm
P= 2*(l+w)
Substitute the given value for l
32 = 2(3w+w)
32/2 = 4w
4w = 16
w= 16/4
w= 4
l= 3*w
l= 3*4
l= 12
Length of a rectangle is 12cm and width is 4cm