SOLUTION: The following equation can be used to find the area of a trapezoid. Solve for the variable b: A=1/2h(B+b) I can't seem to figure this one out. I know that B + b represent th

Algebra ->  Linear-equations -> SOLUTION: The following equation can be used to find the area of a trapezoid. Solve for the variable b: A=1/2h(B+b) I can't seem to figure this one out. I know that B + b represent th      Log On


   



Question 117305: The following equation can be used to find the area of a trapezoid. Solve for the variable b:
A=1/2h(B+b)
I can't seem to figure this one out. I know that B + b represent the lenght of the trapezoid and there are four possible solutions we were given:
B=2A/h
b=B(A-1/2h)
b=A-Bh
b=(2A/h)-B
It can't be the first one, because I am not looking for B, but for b.
Any help would be greatly appreciated.

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Solve for the variable b:
A=(1/2)h(B+b)
2A = h(B+b)
B+b = (2A)/h
b = (2a/h) - B
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Cheers,
Stan H.