how long will a man take a round of a circular field of radius 21m ,cycling at the speed of 8km/h?
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Hello,
we know that distance covered 1 person in 1 round the circular fied is equal to perimeter of the circular field.
we calculate the perimeter of the circular field.
P = 2πr = 2×22/7×21 =132 m
we convert ,the speed of the cyclest ,the km / h in m / s :
8km/h= 8000 m / 3600s=20/9 m/s
we calculate the time taken by cyclist to cover the field:
t=P/v=132/(20/9) s=59.4 s
bye :-)
we know that distance covered 1 person in 1 round the circular fied is equal to perimeter of the circular field.
we calculate the perimeter of the circular field.
P = 2πr = 2×22/7×21 =132 m
we convert ,the speed of the cyclest ,the km / h in m / s :
8km/h= 8000 m / 3600s=20/9 m/s
we calculate the time taken by cyclist to cover the field:
t=P/v=132/(20/9) s=59.4 s
bye :-)
richa39:
thnku
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