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posted by Ivan on Sunday, January 16, 2011 at 12:45am.
A trapezoid has an altitude of 12 cm. Its parallel sides measure 10 and 8 cm, respectively. What is it's area?
A = ((B1 + B2) /2)h. A = ((10 + 12) / 2)12, A = (22 / 2)12 = 132cm^2.
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