If the volume of two cubes are in the ratio 64:8, the ratio of their edges is:	Select.
A) 3:1 B) 3:2 C) 3:5 D) 2:1 E) None of these
Explanation:   Let the edges be a and b of two cubes, then   a3/b3=64/8   =&gt;(a/b)3=(4/2)3   a/b=2/1   =&gt;a:b=2:1   Option 2:1
<result>D</result>
If the volume of two cubes are in the ratio 64:8, the ratio of their edges is: