Q. If the radius of a cone is increased by 10% and the height is decreased by 10%, the volume changes by:

  • (A) Increase of 8.9%
  • (B) Decrease of 1%
  • (C) Increase of 10%
  • (D) No change
✅ Correct Answer: (A) Increase of 8.9%
Explanation: Volume factor=(1.1)²×0.9=1.089 ⇒ 8.9% increase.

Published by Krishna Sharma ⭐ 48.25K Points at 15-Jul-2026 07:13 am in Math

Explanation by: Krishna Sharma
Volume factor=(1.1)²×0.9=1.089 ⇒ 8.9% increase.

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