Two runners are to race one lap on a circular track the radius on the inside lane is 50 m the radius to the outside lane is 51 m how much of a head start should the runner on the outside get

C₁ = 2π.(50) = 100.π
C₂ = 2π.(51) = 102.π

C₂ - C₁ = 102.π - 100.π = 2π. = 6.29 m

So the outside Lane greater then the inside by 6.29 m, and the " outsider" will have a head star of approx. 6.3 m