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September 20, 2014

September 20, 2014

Posted by **shelby** on Thursday, May 19, 2011 at 11:41am.

- geometry -
**Ms. Sue**, Thursday, May 19, 2011 at 11:46amhttp://www.mathopenref.com/trapezoidarea.html

a = h(b1 + b2)/2

8100 = 90h

8100/90 = h

90 = h

- geometry -
**Anonymous**, Friday, January 25, 2013 at 12:33pmFind the area of the following circle.

r = 9 yd.

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