The diameters of two spheres are in the ratio 1:2 what is the ratio of their volumes? Select:
A) 1:7  B) 1:3  C) 1:8  D) 1:1  E) 1:2
1:8   Answer: 1:8
<result>C</result>
The diameters of two spheres are in the ratio 1:2 what is the ratio of their volumes?