b = 3h or b/3 = h
A = 300 = bh = b*b/3 = b^2/3
300 = b^2/3
Solve for b.
The formula for the area of a parallelogram is A = bh. The area of the parallelogram in the illustration is 300 square centimeters. If its base is three times its height, how long is the base?
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