What is the easiest way for solving the question of class 9th ncert math of exercise 13.8 of math of Surface areas and Volumes chapter of question no.(1) Please help me for the best suggestion of this question Find the volume of a sphere whose radius is (i) 7 cm (ii) 0.63 m (Assume π =22/7)
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Find the volume of a sphere whose radius is (i) 7 cm (ii) 0.63 m (Assume π =22/7) Q.1
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(i) Radius of sphere, r = 7 cm
Using, Volume of sphere = (4/3) πr3
= (4/3)×(22/7)×73
= 4312/3
Hence, volume of the sphere is 4312/3 cm3
(ii) Radius of sphere, r = 0.63 m
Using, volume of sphere = (4/3) πr3
= (4/3)×(22/7)×0.633
= 1.0478
Hence, volume of the sphere is 1.05 m3 (approx).