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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
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Correct Answer: Option C
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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