The curved surface of a sphere is 64 π cm2. Find its radius?  Select the correct option:
A) 8
B) 6
C) 4
D) 2
E) 5
4 πr2   = 64   =&gt; r = 4   Answer: 4
<result>C</result>
The curved surface of a sphere is 64 π cm2. Find its radius?