The diameter of a wheel of a bus Is which makes revolutions per minute. Determine its speed In kilometres per hour. [ Use ]
Step 1. Determine the Circumference of the wheel.
The diameter of a wheel of a bus Is .
Use the formula to find the circumference:
So, the circumference is .
Step 2. Determine the distance covered by the wheel.
The wheel makes revolutions in a minute.
Find the total distance covered in revolutions:
Determine the speed:
The wheel covers in 1 minute.
So, the speed of the wheel is .
Convert the speed to kilometre per hour:
So, the speed of the wheel is .