Two right circular cylinders of equal volumes have their heights in the ratio 1:2. Find the ratio of their radii.	Select the correct option:
A) √2:6
B) √2:1
C) √2:1
D) √2:2
E) √2:4
Let their heights be h and 2h and radii be r and R respectively then.   πr2h=πR2(2h)=&gt;r2R2=2hh=21=&gt;rR=2–√1=&gt;r:R=√2:1   Answer:√2:1
<result>C</result>
Two right circular cylinders of equal volumes have their heights in the ratio 1:2. Find the ratio of their radii.