The area of a trapezoid is 75 square in. If the one base is 12 in and the height is 5 in , what is the second base of the trapezoid?

18

Step-by-step explanation:

The area of a trapezoid is area= ((a+b)/2)h where a = base 1, b=base2, and h=height. Since we are missing a base length, he have to work backwards. 75 (area) divided by 5 (height) = 15, so we are left with 15 = (a+b)/2. Multiply both sides by 2, we get 30 = a+b. a=12, so b = 18. Hope it helps!

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step-by-step explanation:

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