Question

Can you help me with this page please??

Answer 1

Do you know the length and height of the field? If you do, all all the sides together (Height + Height + Length + Length) and you get the answer to Part A.

Part B: 
Just do 120 times 5. Then, divide your answer by 6. The answer will be the time they need to run each lap in.

Part C:
Again, what is the length? When you know your length, divide it by 2. Your answer is the side length.

Hope that helped. :)