The curved surface of a sphere is 64 pi cm2. Find its radius?  Select the correct option.
A) 1 cm
B) 4 cm
C) 2 cm
D) 3 cm
E) 5 cm
4 Ï€r2 = 64 =&gt; r = 4   ANSWER 4 cm
<result>B</result>
The curved surface of a sphere is 64 pi cm2. Find its radius?