geometry
posted by JOY .
A square pyramid has a volume of 196 cm^3. Determine the height of the pyramid if the edges of the base measures 7cm.

volume of a square pyramid = 1/3 * b^2 * h
http://math.about.com/od/formulas/ss/surfaceareavol_5.htm
find h. 
I came up with 12.25 cm my answer s/b 12 cm what did I do wrong
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