Find the length of the longest pole that can be placed in a room 12 m long, 8 m broad and 9 m high.  Choose one:
A) 10 m
B) 12 m
C) 17 m
D) 19 m
E) None
Solution   Length of longest pole = Length of the diagonal of the room   =√(12)2 + 82 + 92   ‹=›√289   = 17 m.   Answer 17 m
<result>C</result>
Find the length of the longest pole that can be placed in a room 12 m long, 8 m broad and 9 m high.