If the tire of a car makes 4000 revolutions to cover 8 km, what is the diameter of the tire?
- 0.6 m
- 0.5 m
- 0.7 m
- None of these
Explanation
The car goes 8 km = 8000 meters in 4000 rounds.
So, one round = 8000 ÷ 4000 = 2 meters.
This is the circumference of the tire.
Now, Diameter = Circumference ÷ 3.14 = 2 ÷ 3.14 ≈ 0.64 m, nearly 0.6 m.
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