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If the Radius of a Sphere is Doubled, What is the Ratio of the Volume of the First Sphere to that of the Second Sphere? - Mathematics

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प्रश्न

If the radius of a sphere is doubled, what is the ratio of the volume of the first sphere to that of the second sphere?

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उत्तर

Let `V_1` and `V_2` be the volumes of first sphere and second sphere respectively
Radius of `1^"st"` sphere = r
`2^"nd"` sphere radius = 2r 

∴ `(Volume  1^"st")/(volume  2^"nd")=(4/3πr^3)/(4/3π(2r)^3)=1/8`

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अध्याय 21: Surface Areas and Volume of a Sphere - Exercise 21.2 [पृष्ठ २०]

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आरडी शर्मा Mathematics [English] Class 9
अध्याय 21 Surface Areas and Volume of a Sphere
Exercise 21.2 | Q 9 | पृष्ठ २०
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