How many times, correct to the nearest whole number, will a man run round a circular track of diameter 100m to cover a distance of 1000m?
A. 3 B. 4 C. 5 D. 6
Correct Answer: A
Explanation
In terms of distance, a circle has a total distance or perimeter of 2πr or πd Where r is radius and d is the diameter So perimeter = \(\frac{22}{7}\) x 100 = 314.2857m To cover a distance of 1000m, he is going to round the circular track for \(\frac{1000}{314.2857}\) = 3.18 \(\approxeq\) 3 (to the nearest whole number)