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QThe ratio of the side lengths of a rectangle with an area of 80 square yards is 4:1

The ratio of the side lengths of a rectangle with an area of 80 square yards is 4:1. Which of the following is closest to the length, in yards, of the longer side of the rectangle?

a) 10 b) 16 c) 18 d) 32 e)40

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#1Seger, Megan RAnswered at 2013-03-04 08:56:50
4bxb=80 4b2=80 b2=20 b=2√5 4b=8√5 which is close to 18..
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The ratio of the side lengths of a rectangle with an area of 80 square yards is 4:1

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