The diameter of a bicycle wheel is 42cm. If the wheel makes 16 complete revolution,
MATHEMATICS
WAEC 2009
The diameter of a bicycle wheel is 42cm. If the wheel makes 16 complete revolution, what will be the total distance covered by the wheel? [Take \(\pi = \frac{22}{7}\)
- A. 672cm
- B. 1056cm
- C. 2112cm
- D. 4224cm
Correct Answer: C. 2112cm
Explanation
d = 42cm
Circumference = \(\pi d = \frac{22}{7} \times 42cm\)
= 22 x 6cm = 132cm
Total distance covered = circumference x number of revolutions
= 132cm x 16 = 2112cm
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