Answer:
A = 18 units^2
Explanation:
The figure is a trapezoid. The formula for area of a trapezoid is
A = 1/2 (b1+b2) *h
b1 and b2 are the lengths of the bases and h is the height
A = 1/2 (3+9) *3
A = 1/2 (12)*3
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