These two bends are a circle with a radius of 20 meters. According to the track and field rules, the calculation line of the first track of track and field track should be 0.3m away from the convex edge of track and field track, so the curve length = 2× 3.1416× (20+0.3) =127.55m..

Total length of runway = length of two curves+length of two straight lines = 127.55+200 = 327.55 meters.

Lawn area = circular area+rectangular area

The area of a circle = 3.1416× 20× 20 =1256.64 square meters, and the area of a rectangle = length× width = 100 m× 40 = 4000 square meters.