2009 · Q49
If the radius of the base and the height of a right circular cone are increased by 20% then what is the approximate percentage increase in volume?
Elementary MathematicsMensuration
- A60
- B68
- C73
- D75
Explanation
1.2³ − 1 = 72.8% ≈ 73%.
If the radius of the base and the height of a right circular cone are increased by 20% then what is the approximate percentage increase in volume?
Explanation
1.2³ − 1 = 72.8% ≈ 73%.