Twenty seven solid iron spheres, each of radius r and surface area S a

1.	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′.
Answer» 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 $S^{'}$ .

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′.

Answer»

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 $S^{'}$ .