#### Question

Twenty seven solid iron spheres, each of radius *r* and surface area S are melted to form a sphere with surface area S'. Find the

(i) radius *r*' of the new sphere, (ii) ratio of S and S'.

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#### Solution

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#### Reference Material

Solution for question: Twenty seven solid iron spheres, each of radius r and surface area S are melted to form a sphere with surface area S'. Find the (i) radius r' of the new sphere, (ii) ratio of S and S'. concept: Volume of a Sphere. For the course CBSE