The areas of the two spheres are in the ratio 1: 4. The ratio of their volume is?	Choose the correct choice from the following:
A) 1:7
B) 1:3
C) 1:8
D) 1:9
E) 1:1
4πr12 : 4πr22 = 1 : 4   r1 : r2 = 1 : 2   4/3 πr13 : 4/3 πr23   r13 : r23 = 1:8   Answer:1:8
<result>C</result>
The areas of the two spheres are in the ratio 1: 4. The ratio of their volume is?