how long would a boy take to walk arond acircular park whose diameter is 420m if his speed is 3 km/h?
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Step-by-step explanation:
Diameter = 420 m
= 420/1000 = 0.42 km
Perimeter of the circle = Π * D
= 22/7 * 0.42 km
= 13.2 km
Speed = 3 km/h
Time = Distance / Speed
= 13.2 / 3
= 4.4 hr
Time taken 4.4 hours.
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