A stereo system is being installed in a room with a rectangular floor measuring 13 feet by 12 feet and a 10 foot ceiling. The stereo amplifier is on the floor in the corner of the room. A speaker is on the ceiling in the opposite corner of the room. You must run a wire from the amplifier to the speaker, and the wire must run along the floor or walls ( not through the air) . What is the shortest length of the wire you can use for the connection?