The length of the runway = twice the length of the rectangle+the perimeter of two semi-circles = 200+ the perimeter of a circle.

The length of the first lane (the innermost lane and close to the inner lane) =200+80π ≈ 45 1.2 (m).

The length of the second lane = 200+(80+1.5+1.5) π ≈ 460.62 (m).

The length of the third channel =200+(80+3+3)π ≈ 470.04 (m).

……

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