The formula for the area of a trapezoid is the average of the bases x height
So 217 = (12+x)/2 x 14
217 = (12+x) x 7
217/7 = 12 + x
31 = 12 + x
x=19
Ana D.
asked • 03/31/19A trapezoid with a height of 14 has meters has an area of 217m2 if the lenghth of one base is 12 meters what is the lenghth of the other base
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