The diameters of two spheres are in the ratio 1:2 what is the ratio of their surface area?
Choices.
A) 1:0 B) 1:4 C) 1:6 D) 1:2 E) 1:1
1:4   Answer:1:4
<result>B</result>
The diameters of two spheres are in the ratio 1:2 what is the ratio of their surface area?