DahliaRosy DahliaRosy

14-10-2022
Mathematics

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a=1/2h(b1+b2) is the formula for the area of a trapezoid. Rewrite the formula for b1. Then find the unknown base of the trapezoid that has an area of 78 in2, a height of 12 inches, and one base length of 8 inches.

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