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: 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