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September 19, 2014

September 19, 2014

Posted by **Alyssa** on Monday, March 26, 2012 at 10:38pm.

- geometry -
**Steve**, Tuesday, March 27, 2012 at 10:58amDraw a symmetric trapezoid. Mark the center of the bases

On the long base, each side is covered by half the short base, of length 5. That leaves a triangle on each end that has base 9, hypotenuse 15.

Looks like a 3-4-5 triangle to me, with height 12.

area = (b+B)h/2 = (10+28)*12/2 = 228

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