Q. The radius of a cylinder is increased by 10% while its height is decreased by 10%. The percentage increase in its volume is:
✅ Correct Answer: (A)
8.9%
Explanation: New volume = (1.1)² × 0.9 = 1.089. Hence, increase = 8.9%.
Explanation by: Mr. Dubey
New volume = (1.1)² × 0.9 = 1.089. Hence, increase = 8.9%.