Q. The radius of a circle is increased by 50%. By what percentage does its area increase?
✅ Correct Answer: (C)
125%
Explanation: Area ∝ r². New area = (1.5)² = 2.25 times. Increase = 125%.
Explanation by: Mahesh Chandra
Area ∝ r². New area = (1.5)² = 2.25 times. Increase = 125%.