Q. If the radius of a cylinder is reduced by 20% and its height is increased by 25%, the volume:

  • (A) Remains unchanged
  • (B) Decreases by 20%
  • (C) Increases by 25%
  • (D) Decreases by 36%
✅ Correct Answer: (B) Decreases by 20%
Explanation: (0.8)² × 1.25 = 0.80. Hence, volume decreases by 20%.

Published by Mr. Dubey ⭐ 111.54K Points at 15-Jul-2026 06:29 am in Math

Explanation by: Mr. Dubey
(0.8)² × 1.25 = 0.80. Hence, volume decreases by 20%.

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