how long would a boy take to complete one round of a circular park whose radius is 210 my if his speed is 3 km per hour
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Answered by
1
perimeter of circular field =2πr
so..2×22/7×210=1.540m
then time=30.8 minute
so..2×22/7×210=1.540m
then time=30.8 minute
Answered by
6
The radius of the circular park = 210m = 0.21 km
Circumference of circular park = 2πr
= 2×3.14×0.21 km
= 1.3188 km
Speed of boy = 3 km/hr
Time = 1.3188/3 hr
= 0.4396 hr
≈ 26 minutes
The boy will take 26 minutes to complete one round of circular park.
Circumference of circular park = 2πr
= 2×3.14×0.21 km
= 1.3188 km
Speed of boy = 3 km/hr
Time = 1.3188/3 hr
= 0.4396 hr
≈ 26 minutes
The boy will take 26 minutes to complete one round of circular park.
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