a person travels on a circular track of radius 14m calculate the distance traveled and the displacement of the person in one fourth round of journey
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Distance=1/4*2*π*r
=π*14/2
=7*π
=21.99≈22m
Displacement would be the chord joining the starting and ending point in the circle, since that would form a right angle triangle.
Displacement=√r²+r²
=√2*r
=14√2
=19.79≈20m
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