Posted by Mala on Saturday, March 20, 2010 at 5:23pm.
Just do whatever legal moves it takes to make b be the only thing on one side of the equals sign. What is b in terms of everything else?
A= 1/2h(B + b)
2A = Bh + bh
2A - Bh = bh
b = (2A - Bh)/h
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