Question on: WAEC Mathematics - 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 Option: C
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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