Q. A cylinder has radius r and height h. If both are increased by x%, the percentage increase in volume is:
✅ Correct Answer: (B)
Approximately 3x% for small values of x
Explanation: Volume ∝ r²h. Exact increase = (1+x/100)³ - 1. For small x, it is approximately 3x%.
Explanation by: Mr. Dubey
Volume ∝ r²h. Exact increase = (1+x/100)³ - 1. For small x, it is approximately 3x%.