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December 19, 2014

December 19, 2014

Posted by **Tony** on Friday, March 23, 2007 at 12:57am.

The area of a trapezoid is:

A= (1/2) h (b1 + b2)

...where h = height and b1, b2 are the bases.

Substitute what you know to solve for the unknown.

224 = (1/2)(16)(20 + x)

Hopefully, you can solve for x, which will be the other base.

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