Q57 of 189 Page 512

If the surface area of a sphere is then its volume is

Surface area of a sphere


Given Surface area =



⇒ r= 6m


Volume of a sphere


Volume

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55

The surface area of a sphere of radius 21 cm is

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The surface area of a sphere is 1386 cm2. Its volume is

 58

The volume of a sphere is 38808 cm3. Its surface area is

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If the ratio of the volumes of two spheres is 1 : 8, then the ratio of their surface area is