2018 · Q86
Two cones have their heights in the ratio 1:3. If the radii of their bases are in the ratio 3 : 1, then the ratio of their volumes will be
Elementary MathematicsMensuration
- A1:1
- B2:1
- C3 : 1
- D9:1
Explanation
Volume ratio = (r1^2 h1)/(r2^2 h2) = (3^2 x 1)/(1^2 x 3) = 9/3 = 3. So the ratio is 3:1. Hence option C.