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प्रश्न
The radius of a sphere is 2r, then its volume will be ______.
विकल्प
`4/3 pir^3`
`4pir^3`
`(8pir^3)/3`
`32/3pir^3`
उत्तर
The radius of a sphere is 2r, then its volume will be `underlinebb(32/3pir^3)`.
Explanation:
Given, the radius of a sphere is 2r.
The volume of a sphere = `4/3` × (radius)3
Thus, the volume of the given sphere = `4/3 xx pi xx (2r)^3`
= `4/3 xx pi xx 8 xx r^3`
= `(32)/3 pir^3`
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