A metallic sphere of radius 12 cm is melted and drawn into a wire, whose radius of cross section is 24 cm. What is the length of the wire? Pick one.
A) 6 cm	B) 4 cm	C) 8 cm	D) 3 cm	E) 9 cm

Rationale: "volume of the wire ( in cylindrical shape ) is equal to the volume of the sphere . π ( 24 ) ^ 2 * h = ( 4 / 3 ) π ( 12 ) ^ 3 = > h = 4 cm answer : b"
Answer: B