Question 1075248
16,000 m and the circumference of the wheel is 2*pi*30=188.496 cm or 1.88496 m.  That is also 2 pi radians.
The number of revolutions of the wheel is 16,000/1.88496=843 (don't round the first and round only this).
The number of radians/second is 8488.2636*2pi/3600 =14.81 radians/second.
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Check
This is 16 km/h or 4.44 m/sec.  One circumference of a wheel is 1.9 meters, so this is about 2.3 circumferences, and each circumference has 2 pi radians.  This is 4.6 pi radian/sec which is 14.45 radians/sec