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September 30, 2014

September 30, 2014

Posted by **Anonymous** on Friday, October 28, 2011 at 4:40pm.

- geometry -
**Steve**, Friday, October 28, 2011 at 5:41pm2(x+y)=42

x+y=21

xy=54

x + 54/x = 21

x^2 - 21x + 54 = 0

(x-18)(x-3) = 0

x=18 y=3

or

x=3,y=18

Either way, the rectangle is 3x18

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