Q11 of 28 Page 4

A railroad curve is to be laid out on a circle. What radius should be used if the track is to change direction by 250 at a distance of 40 meters?

Given length of arc = 40 m


And θ = 25°


We know that 180° = π rad ⇒ 1° = π/ 180 rad



We know that





= 91.64 m


So, the radius of the track should be 91.64 m.


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