The length of a rectangle is twice it's width. If it's perimeter is 54cm, find its length. Explain!
asked Mar 11, 2014 in Algebra 1 Answers by anonymous

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2 Answers

The length of a rectangle is twice it's width. If it's perimeter is 54cm, find its length. Explain!

remember the formulas:

Area = length * width

Perimeter = 2 * length + 2 * width

therefore 54 = 2l + 2w and length is 2 * width or l = 2w

54 = 2* (2w) + 2w

54 = 4w + 2w

54 = 6w

54/6 = w

9 = w and

l = 2*9

l = 18

answered Mar 11, 2014 by waltjhall Level 10 User (55,740 points)

Um, yeah I don't know this question/type of problem so could you please explain what you're trying to do here? I don't know any of this math so...

answered Dec 17, 2015 by Kevin McComb Level 2 User (1,120 points)
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