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Railways PYQCBT 1 2020

RRB NTPC · Question 1

Find the length of the longest pole that can be placed in a room of dimensions 30 m × 15 m × 10 m.

  1. 31 m

  2. 33 m

  3. 35 m

  4. 18 m

Show answer & explanation

Answer: (C) 35 m

Explanation

The longest pole is the room's diagonal: √(30² + 15² + 10²) = √(900 + 225 + 100) = √1225 = 35 m.