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Q.

The radius of a sphere is 2r, then its volume will be


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a

43πr3

b

4πr3

c

83πr3

d

323πr3  

answer is D.

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Detailed Solution

Given, the radius of the sphere is 2r.
The formula for the volume of sphere is given by,
Volume of a sphere = 4 3 π r 3  , where r is the radius. So, after substituting the value of all the dimensions in the formula we get,
Volume of sphere =43π(2r)3
=323πr3 Therefore, the volume of sphere is 323πr3.
Hence option (4) is correct.
 
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