## Ratio of Volume of Cube Inside a Sphere Inside a Cube

\[2x\]

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\[2x\]

\[(2x)^3=8x^3\]

.The distance from the centre of the innermost cube to a vertex of the cube is equal to the radius of the circle and is

\[\sqrt{x^2+x^2+x^2} = x \sqrt{3}\]

.The side of the large cube is twice the radius of the sphere, and is equal to

\[2x \sqrt{3}\]

Then

\[\frac{Volume \: of \: Large \: Cube}{Volume \: of \: Small \: Cube}= \frac{(2x \sqrt{3})^3}{8x^3} = 3 \sqrt{3}\]