Find the diameter of a sphere , who contain a cube of side a cm.
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Each side of the cube (a) = 5 cm.
Diameter of the sphere (2r) = 5 cm .
∴ Radius of the sphere (r) = 5/2 cm.
Volume of the cube = a3 = 53 cm3 = 125 cm3
Volume of the sphere = 4/3πr3
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