The radius of circular field of village Amadpur is 280 meter. Chaitali wants to go round the
field by walking with speed 5.5 km/hour, let us calculate how long will be taken by Chaitali
to complete one revolution.
Answers
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Step-by-step explanation:
As we have given,
the radius of circular field = 280m ,
we know,
circumference of circle = 2πr
circumference of circular field
= 2 (22/7) (280)
= 2 (22)(40)
= (44) (40)
= 1,760 m
speed = 5.5km/hr
= [(5.5) x (10)³m]/(60 x 60)
= [ (5.5) x 1000 ] / 3600
= [ (5.5) x 10 ] / 36
= (55 / 36 ) m/sec
Distance = circumference of circular field = 1,760 m
speed = distance / time
time = distance / speed
= 1,760 / (55/36)
= 32 x 36
= 1,152 sec
it will take 1,152 sec to complete one revolution
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