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MEDAL & FAN ANYBODY ? Calculate the volume of a sphere with a radius of 3 in. Express your answer in terms of π. V = 36π in.3 a. 36π in.3 b. 45π in.3 c. 63π in.3 d. 81π in.3
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V=4/3 pi r^3
V=4/3 (3)^3 pi =4*9 pi=36 pi in^3
you are right A is the answer
\[4/3 \times \pi \times r^3\]
r is 3 \[4/3 \times \pi \times 3^3\]
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\[3^3 = 3 \times 3 \times 3 = 9 \times 3 = 27\]
so now \[4/3 \times \pi \times 27\]
now \[4/3 \times 27\]
so 3 times 9 is 27 so now \[4 \times 9 \]
which is \[4 \times 9 = 36\]
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therefore out of the options given A is correct
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