Q. The ratio of the curved surface area of a hemisphere to the total surface area of the same hemisphere is:

  • (A) 1 : 2
  • (B) 2 : 3
  • (C) 3 : 4
  • (D) 4 : 3
✅ Correct Answer: (B) 2 : 3
Explanation: CSA = 2πr² and TSA = 3πr². Hence ratio = 2:3.

Published by Mahesh Chandra ⭐ 7.32K Points at 15-Jul-2026 08:02 pm in Math

Explanation by: Mahesh Chandra
CSA = 2πr² and TSA = 3πr². Hence ratio = 2:3.

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