The volume of a pyramid is V = bw * h/3 or V = 1/3 * bwh
Since the base is a square b = 10 and w = 10 as well
Plug in the numbers to find the answer:
V = 1/3 * (10) * (10) * (13)
V = 1/3 * (1300) = 433.333
So your answer is about 433.33 units cubed.
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