What is the length of the longest pole which can be kept in a room 9 m long, 4 m broad and 3 m high?	Choose the correct answer.
A) 10.29  B) 9  C) 11  D) 13  E) None
Explanation:   d2 = 92 + 42 + 32 = 10.29   10.29)
<result>A</result>
What is the length of the longest pole which can be kept in a room 9 m long, 4 m broad and 3 m high?