a cyclist goes around a circular track once every two minutes if the radius of the circular track is 105 metres calculator his speed.
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Answer:
given :-
Radius , r = 105
time t = 2min
= 120 second
we know also
circumference or distance of circle = 2πr
⇒2×22/7×105
⇒ 660 m
∴ speed = distance / time
⇒660 m/ 120
⇒5·5m/s
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