**Three solid metallic spheres whose radii are 1 cm, X cm and 8 cm, are melted and recast into a single solid sphere of diameter 18 cm. The surface area (in $$ cm^2 $$ ) of the sphere with radius x cm is:** A) $$ 144 \\pi $$ B) $$ 72\\pi $$ C) $$ 64\\pi $$ D) $$ 100\\pi $$ Click Link for Answer