Petra is hanging out with her friends John and Bailey after school. Petra, who is scared of heights, is amazed by a utility worker climbing up a telephone pole by her school. She asked her about the wires attached to the pole. The utility worker told her about the guy-wire. A guy-wire is a tensioned cable designed to add stability to a free-standing structure like the telephone pole. Petra notices that this telephone pole has two guy-wires that act as anchors. The utility worker tells her the length of the shorter guy-wire is 25 feet and it is anchored into the ground 10 feet away from the bottom of the pole. She thinks if she knows the height where this guy-wire meets the pole is, she can multiply it by 2 to get the full height of the telephone pole. To help her with her calculations, find the height of where the 25 feet guy-wire meets the telephone pole (round to the nearest tenth).