SOLUTION: the length of a rectangle is double its width. if a rectangle has a perimeter of 48 cm, (find in cm) its length.

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Question 299692: the length of a rectangle is double its width. if a rectangle has a perimeter of 48 cm, (find in cm) its length.
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
let the width be x
the length will be 2x
perimeter = 2L+2W
=2x+4x
6x=48
x=8 cms
length is twice width
so length is 16 cm.