A 3-m radius disk is rotating at 6 rad/sec. What is the linear speed of a point that lies on the circumference of the disk?

Answer 1

v = rω = 3*6 = 18 m/s

Answer 2

what about this one:
A cyclist is moving at 6.7 meters/sec, on a bike with 0.25 m radius wheels. What is the angular speed of the wheels, in rad/sec?

Answer 3

The speed of the bike is the same as the speed of a point on the tire, right?
v = rω
6.7 = 0.25ω
so, ω = ___