Two solid spheres have volumes 250cmo and 128cmo respectively. Find the ratio of their radii.
A
125:64
B
25:16
C
2:1
D
4:3
E
5:4
Verified Correct Answer: E.
Step-by-Step Mathematical Solution
4/3πR3/4/3πr3 = 250/180 = (R/r)3 = 5:4
Source: Myschool Past Questions Archive (Record #23536)