2012 · Q88
The radius of the base of a right circular cone is increased by 15% keeping the height fixed. The volume of the cone will be increased by:
Elementary MathematicsMensuration
- A30%
- B31%
- C32.25%
- D34.75%
Explanation
Volume scales with r^2: 1.15^2-1 = 0.3225, i.e. 32.25%.