12 spheres of the same size are made from melting a solid cylinder of 16 cm diameter and 2 cm height. Find the diameter of each sphere.  Choose one:
A) 4 cm
B) 6 cm
C) 8 cm
D) 10 cm
E) 12 cm
Explanation:   In this type of question, just equate the two volumes to get the answer as,   Volume of cylinder =πr2h   Volume of sphere =43πr3   =&gt;12∗4/3πr3=πr2h   =&gt;12∗4/3πr3=π∗8∗8∗2   =&gt;r3=8∗8∗2∗3/12∗4   =&gt;r3=8   =&gt;r=2cm   =&gt;Diameter =2∗2=4cm   Option 4 cm
<result>A</result>
12 spheres of the same size are made from melting a solid cylinder of 16 cm diameter and 2 cm height. Find the diameter of each sphere.