A metallic sphere of radius 12 cm is melted and drawn into a wire, whose radius of cross section is 16 cm. What is the length of the wire?  Answers.
A) 7 cm
B) 5 cm
C) 2 cm
D) 1 cm
E) 9 cm
Volume of the wire (in Cylindrical shape) is equal to the volume of the sphere.   π(16)2 * h   = (4/3)π (12)3   =&gt; h = 9 cm   Answer: 9 cm
<result>E</result>
A metallic sphere of radius 12 cm is melted and drawn into a wire, whose radius of cross section is 16 cm. What is the length of the wire?