SOLUTION: A = 1/2h(B+b) area of a trapezoid solve for b

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Question 32887: A = 1/2h(B+b)
area of a trapezoid
solve for b
Answer by sarah_adam(201) About Me  (Show Source):
You can put this solution on YOUR website!
area of a trapezoid : A = 1/2 * h *(B+b) where B and b are the lengths of the two parallel bases of a trapezoid, and h is its height
A = 1/2 * h *(B+b)
2A/h = B + b
Therefore b = 2A/h - B