Question 1: It is known that the total length of the standard runway is 600 meters, which refers to the length of the innermost runway, and the radius of the innermost runway is 40 meters, so it is only necessary to calculate the sum of the perimeters of the two semi-circular bends of the innermost runway first, and then subtract the sum of the perimeters of the two bends from 600 meters to get the length of the straight line.

600-3. 14×40×2≈349

349÷2= 174.5

Question 2: Because each runway is 1.2m wide, the radius of the second bend is 40+1.2x2 = 42.4m. ..

The third question: the radius of the eighth lane of the outermost circle is 40+ 1.2×8=49.6 meters.

Question 4: How many meters is the corner difference between two adjacent runways?

2× 3.14×1.2 = 7.536m.