Trapezoid is graphed in a coordinate plane. What is the area of the trapezoid?
A.
B.
C.
D.
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The area of the trapezoid is 40 square units.What is the height of the trapezoid?
What is the formula for the area of a trapezoid?
The formula for the area A of a trapezoid is A = 1/2 h(b1 + b2), where h is the height and b1 and b2 are the lengths of the two bases. Solve the formula for b1. Justify each step. Then find the length of one of the bases of the trapezoid when the area of the trapezoid is 91 square meters, the height is 7 meters, and the length of the other base is 20 meters.
