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April 20, 2014

Homework Help: Algebra

Posted by G on Friday, February 15, 2008 at 10:59am.

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

A=area of a trapezoid

b1=width at the top

b2-width at the bottom

h=height

A 7-foor tall trapezoid has 42 square feet of area. If is is 9 feet wide at the bottom, how far across is it at the top?

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