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 ⭐ 109.12K 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%.

💬 Discussion

📊 Question Analytics

👁️
8
Total Visits
📽️
11 d ago
Published
🎖️
Mr. Dubey
Publisher
📈
87%
Success Rate