Question

The diameter of each wheel bus is 140 cm. How many revolutions per minute must a wheel makes in order to move at a speed of 66 km per hour.

Answer 1

Hiii friend,


Diameter of the wheel = 140 cm

Radius =.D/2 = 140/2 = 70 cm

Distance covered by a wheel in 1 minute = (66×1000 × 100/60) cm


=> 110000 cm

Circumference of a wheel = 2 × 22/7 × 70 = 440 cm


Number of a revolutions in 1 min = (110000/440) = 250.



HOPE IT WILL HELP YOU...... :-)

Answer 2

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