Q: Four cylindrical drums, each of radius 1 m, are placed such that each one touches other two drums. A sewer pipe is to be placed through the gap of these drums. What could be the maximum possible radius for this pipe?
(a)(√2 + 1) m
(b)(√2 − 1) m
(c)(π√2 − 1) m
(d)(π√2 + 1) m
Correct Answer: (c)
The correct answer is (c): (π√2 − 1) m. Subject: Internal Security | Sub-topic: General Note: This answer was determined through AI-based research. Verify against the official answer key when available.