A solid piece of iron of dimensions `49xx33xx24` cm is moulded into a sphere. The radius of the sphere is (a) 21 cm (b) 28 cm (c) 35 cm (d) None of these

Explanation

Here Volume of Sphere =Volume of cuboid

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Rightarrow frac{4}{3} pi r^{3}=49 times 33 times 24 `

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Rightarrow quad r^{3}=frac{49 times 33 times 24 times 3 times 7}{4 times 22}`

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