While doing a science experiment in the physics lab, Linh took 4 measurements of the temperature and wrote the average of those as an answer. If the measurements of the temperature are -3, 0, -3 and -1 then what is the final answer of her experiment?

Stormy is walking in the north direction. After walking for 5 meters, he takes a right turn and walks for another 3 meters. He then takes a left turn and walks for 22 meters. He again takes a right turn and walks for another 33 meters. How far is he from the starting point?

Find the perimeter of a park which is made of one rectangle and 2 semi-circle(s), as shown in the figure. (All measurements are in meters, assume π = 22/7)