A student walked out from the Classroom towards the Library. She went first to the Canteen on the left side - 24 ft away. After a Cup of tea - took a right turn and went to the Laboratory 13 ft away. She then went to the Physics Block - 15 ft to the left. She talked to a friend - in the garden 3 ft on the left and continued walking in the same direction to the Library - 10 ft more. What was the actual distance between the Library and the Classroom ?