Find the volume of a sphere whose radius is (a).7cm. (b).0.63m

1.	Find the volume of a sphere whose radius is (a).7cm. (b).0.63m
Answer» i) Radius of the sphere(r) = 7 cmVolume of the sphere = 4/3πr³= (4/3 × 22/7 × 7 × 7 × 7)= (88×7×49)/3×7=4312/3= 1437 ⅓Volume of the sphere =1437 ⅓ cm³(ii) Given: Radius of the sphere(r) = 0.63 mVolume of the sphere = 4/3πr³= (4/3 × 22/7 × 0.63 × 0.63 × 0.63)= 4×22×.09×.21× 0.63= 1.0478 m³Volume of the sphere =1.0478 m³

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