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2 years ago

10

Find the length of the base of a square pyramid if the volume is 128 cubic inches and has a height of 6 inches.

2 answers:

Sladkaya [172]2 years ago

6 0

Answer: The base length of the pyramid is:

8 inches

Alex777 [14]2 years ago

5 0

$The\ value\ of\ the\ square\ pyramid:V=\dfrac{1}{3}BH\\\\B=128in^3;\ H=6in\\\\subtitute:\\\\\dfrac{1}{3}B\cdot6=128\\\\2B=128\ \ \ |divide\ both\ sides\ by\ 2\\\\B=64\ (in)\\\\a-the\ length\ of\ the\ base\\\\B=a^2\\\\a^2=64\to a=\sqrt{64}\to\boxed{a=8\ (in)}$

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