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Each wheel of a car is making 5 revolutions per second...

This question belongs to Arithmetic Ability Speed Time And Distance
Speed Time and Distance
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Each wheel of a car is making 5 revolutions per second. If the diameter of a wheel is 84 cm, then the speed of the car in cm/sec would be :

Answer & Solution
Correct Answer: Option D
Circumference of the circle = 2πr
= 2πr
= 2 × $$\frac{22}{7}$$ × 42
= 264 cm
Distance cover in 1 sec
= 264 × 5
= 1320 cm/sec
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