Find the length of the longest pole that can be placed in a room 12 m long, 8 m broad and 9 m high. Select: A) 10 m B) 12 m C) 17 m D) 19 m E) none

Rationale: solution length of longest pole = length of the diagonal of the room = √ ( 12 ) 2 + 82 + 92 ‹ = › √ 289 = 17 m . answer c
Answer: C