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Question 38
A man is running at the speed of 20 km/hr. What is time (in seconds) taken by man to cover one round of a circular garden of radius 350 metres?
Solution
Circumference of the circular garden =$$2\pi r$$
=2*(22/7)*350
=2200 meters
i.e 2.2 kilometers
Speed=20 km/hr
Time=distance/speed
=2.2/20 hrs
=(2.2/20)*60*60 seconds
=396
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