A metallic sphere of radius 12 cm is melted and drawn into a wire, whose radius of cross section is 4 cm. What is the length of the wire?  Options:
A) 116 cm B) 144 cm C) 168 cm D) 173 cm E) 189 cm
Volume of the wire (in Cylindrical shape) is equal to the volume of the sphere.   π(4)^2 * h = (4/3)π (12)^3 =&gt; h   = 144 cm   Answer:144 cm
<result>B</result>
A metallic sphere of radius 12 cm is melted and drawn into a wire, whose radius of cross section is 4 cm. What is the length of the wire?