An acrobat thief entered an ancient temple to steal treasure. Inside the temple he saw a huge room with straight walls and no windows. The ceiling of the temple was 100 metres high. In the centre of the ceiling there were two hooks a metre apart. From each of the two hooks, a thick gold rope was hanging. Each rope reached the floor of the temple. There was nothing else in the room and the thief had nothing but a knife with him.
He would like to steal as much of the gold rope as possible. He can easily climb up the rope, but he cannot jump down from more than 7 metres above the ground.
How much rope can he steal?