Geometrymedium · Past Paper
A bicycle wheel makes 5000 revolutions in moving 11 km. What is the diameter of the wheel?
A35 cm
B70 cm
C100 cm
D140 cm
✓ Correct Answer: B — 70 cm
Distance per revolution = 11000m / 5000 = 2.2m. 2.2 = pi * d => 2.2 = (22/7) * d => d = 0.7m = 70 cm.
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