If the volume of two cubes are in the ratio 8:1, the ratio of their edges is: Select:
A) 2:1	B) 3:2	C) 3:5	D) 3:7	E) None of these
Explanation:   Let the edges be a and b of two cubes, then   a3/b3=8/1   =&gt;(a/b)3=(2/1)3   a/b=2/1   =&gt;a:b=2:1   Option 2:1
<result>A</result>
If the volume of two cubes are in the ratio 8:1, the ratio of their edges is: