Question on: JAMB Mathematics - 2018
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
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Correct Option: B
Perimeter of circle = 2πr = πD (note D = 2r)
 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
 That is, at the number 4 round he is going to cover up to 1000m
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