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slavikrds [6]
4 years ago
13

What is the volume of a spear that has a diameter of 42 cm.

Mathematics
1 answer:
mash [69]4 years ago
3 0
R-the\ radius\ of\ the\ sphere\\\\the\ volume\ of\ the\ sphere:V=\frac{4}{3}\pi R^3\\the\ diameter=2R\ therefore\ R=42:2=21\ (cm)\\\\V=\frac{4}{3}\pi\cdot21^3=\frac{4}{3}\pi\cdot9,261=4\cdot3,087\pi=12,348\pi\\\\=12,348\cdot3.14\approx\boxed{38,772.72\ (cm^3)}
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Step-by-step explanation:

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substituting Sum of terms = 9 and Number of terms = 5

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