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September 19, 2014

September 19, 2014

Posted by **Livia** on Thursday, August 19, 2010 at 4:15am.

__________________

I I

x I I x

_________________________ Existing Wall

X is the shorter wall. The existing wall is longer than the one across from it, I tried to make it look like that in the picture.

- Math Calculus -
**Damon**, Thursday, August 19, 2010 at 4:34am240 = 2x+L so L = (240 - 2 x)

A = x L = x (240 - 2 x) = 240 x - 2 x^2

so

5500 = 240 x - 2 x^2

2750 = 120 x - x^2

x^2 -120 x + 2760 = 0

I get about 89 or 31

solve quadratic

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