jacquelineyg jacquelineyg

14-11-2018
Mathematics

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the width of a rectangle is 5 meters less than the length. If the perimeter of the rectangle is 80 meters, what are the length and width

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mynkiran mynkiran

25-11-2018

The formula for perimeter is 2l+2w. Since we know that l=w-5, we can substitute this into the original equation.

2(w-5)+2w=80

2w-10+2w=80

4w=90

w=22.5 meters

Hope that helps!

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