An athlete runs on a semicircular track of radius X meter. Calculate the ratio of distance covered to the displacement by the athlete, when he moves from one end to the other.

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Solution

distance = πr = half of the circumference
r = x m
so distance = πx = 22x/7
displacement = diameter of the circular track = 2x
ratio = 11/7

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An athlete runs on a semicircular track of radius X meter. Calculate the ratio of distance covered to the displacement by the athlete, when he moves from one end to the other.

distance = πr = half of the circumference r = x m so distance = ​πx = 22x/7 displacement = diameter of the circular track = 2x ratio = 11/7

distance = πr = half of the circumference
r = x m
so distance = πx = 22x/7
displacement = diameter of the circular track = 2x
ratio = 11/7