504 cones , each of diameter 3.5 cm and height 3 cm , are melted and recast into a metallic sphere . Find the diameter of the sphere and hence find its surface area.

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dineshUncategorized
504 cones , each of diameter 3.5 cm and height 3 cm , are melted and recast into a metallic sphere . Find the diameter of the sphere and hence find its surface area.