Q. If the radius of a cylinder is increased by 20% and the height remains the same, the volume increases by:
✅ Correct Answer: (C)
44%
Explanation: Volume ∝ r². (1.2)² = 1.44, so the increase is 44%.
Explanation by: Mr. Dubey
Volume ∝ r². (1.2)² = 1.44, so the increase is 44%.