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Question

if the radius of a sphere is halved then what is the ratio of the volume of the actual sphere to the volume of the new sphere.

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Solution

The radius of the sphere is R cmThus the volume of the sphere will be 43πR3Now, according to the question:The radius of the sphere is halved, therefore, the rdaius of the new sphere = R2cmThus, the new volume of sphere will be 43πR23The ratio of volumes will be= Volume of Actual sphereVoluem of New sphere=43πR343πR23=81The ratio will be 8 : 1

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