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Sphere and Its Surface Area

The volumes o...

Question

The volumes of two spheres are in the ratio 27 : 64. What is the ratio of their radii?

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Solution

Let the radius of the first and the second sphere be r₁ units and r₂ units respectively.

Volume of the sphere =

Ratio of the volume =

Therefore, the ratio of their radii is 3:4.

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