Test Index

WAEC Mathematics 2010 Paper

Question : 24

Total: 49

Solution:

Concept:

The number of rounds is the total distance divided by the circumference of the circular track.

Explanation:

Distance covered in one complete round is the circumference of the track.

Given diameter

d = 100\,\mathrm{m}

Circumference

= \pi d = \frac{22}{7} \times 100 = \frac{2200}{7} \approx 314.29\,\mathrm{m}

Total distance to cover is

1000\,\mathrm{m}

Number of rounds

= \frac{1000}{\frac{2200}{7}} = \frac{1000 \times 7}{2200} = \frac{7000}{2200} = 3.18

Rounded to the nearest whole number, this is

3

Answer:

A. 3

Go to Question:

Prev Question

Next Question