What is the length of the longest pole which can be kept in a room 12 m long, 4 m broad and 3 m high?
Choose the correct choice from the following answers.
A) 10 cm B) 12 cm C) 15 cm D) 13 cm E) 16 cm
d2 = 122 + 42 + 32 = 13   ANSWER:13 cm
<result>D</result>
What is the length of the longest pole which can be kept in a room 12 m long, 4 m broad and 3 m high?