Find the volume of a sphere whose diameter is 42 m.

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RRB Group D 30 Aug 2022 Shift 3 Official Paper
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  1. 23,437 m3
  2. 42,137 m3
  3. 38,808 m3
  4. 13,416 m3

Answer (Detailed Solution Below)

Option 3 : 38,808 m3
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Detailed Solution

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Given:

Diameter = 42m

Formula used:

Volume of sphere =\(\frac{4}{3}\pi r^3\)

Calculation:

Volume of sphere = \(\frac{4}{3}\pi r^3\)

substituting 

volume = \(\frac{4}{3}\pi \times21^3 \) = 38808 m3

∴ Option 3 is the correct answer.

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