A rider in a road bike race had an average linear speed of 40.075 ​km/hr. The wheel of his bicycle had a diameter of 67 cm. What is his angular​ speed, in revolutions per​ hour?

Answer 1

40.075km/hr

d=67cm

circum=d*pi=210.4867...........cm

40.075km=4.0075*10^6cm/hr

" " /210.4867=19.0392.............rph