the area of a trapezoid is 60 square feet, it's height is 6 ft and one base is 12 ft, find the number of feet in the other one.
Area of trapezoid = (b1 + b2)/2 * h
60 = (12 + b2)/2 * 6
120 = 6(12 + b2)
12 + b2 = 120/6 = 20
b2 = 20 - 12 = 8 ft
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