Homework Help: geometry

Posted by Anonymous on Monday, February 11, 2013 at 4:45pm.

A rectangle has length and width in the ratio of 5:9. If the perimeter is 280, what is the length of the rectangle?

geometry - Reiny, Monday, February 11, 2013 at 5:27pm
let the width be 5x and the length 9x

P = 2l + 2w = 10x + 18x = 28x

28x = 280
x = 10

width is 50, length is 90

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