Q. If both the radius and height of a cylinder are reduced by 20%, then its volume decreases by:
✅ Correct Answer: (B)
48.8%
Explanation: New volume = (0.8)³ = 0.512. Decrease = 48.8%.
Explanation by: Mr. Dubey
New volume = (0.8)³ = 0.512. Decrease = 48.8%.