Q. The ratio of the total surface area to the curved surface area of a cylinder is 5 : 4. Then h : r is:

(A) 4 : 1
(B) 2 : 1
(C) 1 : 4
(D) 3 : 2

✅ Correct Answer: (B) 2 : 1

Explanation: TSA/CSA = (r+h)/h = 5/4 ⇒ h = 4r.

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

Explanation by: Mr. Dubey

TSA/CSA = (r+h)/h = 5/4 ⇒ h = 4r.

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