The radius of the circle is 10 cm. This means that it has a diameter of 20 cm or 0.2 meters.
If the wheel is spinning at 5 revolutions per minute, it is making 5 revolutions (or revolutions) per minute.
To find the rotation angle of a wheel in 1 second, we need to calculate how many times the wheel rotates in 1 second.
There are 60 seconds in a minute, so the wheel spins 5 times in 60 seconds. In other words, one lap lasts 12 seconds (60 seconds divided by 5 laps).
A circle has 360 degrees, so a circle completes 360 degrees in one revolution. So the wheel rotates 360/12 = 30 degrees in 1 second.
The wheel then rotates 30 degrees in one second.