The volumes of two cones are in the ratio 1 : 10 and the radii of the cones are in the ratio of 1 : 2. What is the length of the wire?	Choose the correct choice from the following choices: A) 2:5 B) 2:8 C) 2:1 D) 2:4 E) 2:2
The volume of the cone = (1/3)πr2h   Only radius (r) and height (h) are varying.   Hence, (1/3)π may be ignored.   V1/V2 = r12h1/r22h2 =&gt; 1/10 = (1)2h1/(2)2h2   =&gt; h1/h2 = 2/5   i.e. h1 : h2 = 2:5   2:5nswer:2:5
<result>A</result>
The volumes of two cones are in the ratio 1 : 10 and the radii of the cones are in the ratio of 1 : 2. What is the length of the wire?