Q. The radius of a cylinder is increased by 50%. To keep its volume unchanged, the height should be multiplied by:
✅ Correct Answer: (B)
4/9
Explanation: New height = 1/(1.5²) = 1/2.25 = 4/9.
Explanation by: Mr. Dubey
New height = 1/(1.5²) = 1/2.25 = 4/9.