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Surface Areas and Volumes
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31/07/2021 10:53 am
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Find the volume of a sphere whose radius is
(i) 7 cm (ii) 0.63 m
(Assume π =22/7)
1 Answer
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31/07/2021 10:58 am
(i) Radius of sphere, r = 7 cm
Using, Volume of sphere = \(\frac{4}{3}\) πr3
= \(\frac{4}{3}\) × \(\frac{22}{7}\) × 73
= \(\frac{4312}{3}\)
Hence, volume of the sphere is \(\frac{4312}{3}\) cm3
(ii) Radius of sphere, r = 0.63 m
Using, volume of sphere = \(\frac{4}{3}\) πr3
= \(\frac{4}{3}\) × \(\frac{22}{7}\) × 0.633
= 1.0478
Hence, volume of the sphere is 1.05 m3 (approx).