What is the time taken by a person to cover one round of a circular park of diameter 210 m if he walks at a speed of 6 km/hr? (pi = 22/7)
Answer
Correct Answer : a ) 6.6 minutes
Explanation :It is given that
Speed of man = 6 km/hr
Diameter of circular park (d) = 210m = 0.21 km
Perimeter of Circular Park = π d
Perimeter of Circular Park = (22/7) * 0.21 km
Perimeter of Circular Park = 22 * 0.03 km
Perimeter of Circular Park = 0.66 km
Time taken by man to complete one round of the park = Distance/Speed
= 0.66/6 hr
= 0.11 hr
= 0.11 * 60 minutes
= 6.6 minutes
Hence, (a) is the correct answer.
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