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December 19, 2014

December 19, 2014

Posted by **Christine** on Wednesday, February 18, 2009 at 2:55pm.

- Advance Math -
**Damon**, Wednesday, February 18, 2009 at 3:01pmarea of bed = x^2

area of whole figure = (x+6)^2

area of path = (x+6)^2 - x^2

so

x^2 + 12 x + 36 -x^2 = x^2

-x^2 + 12 x + 36 = 0

x^2 - 12 x - 36 = 0

(x-6)(x-6) = 0

x = 6

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