Answer :
Final answer:
To convert 39.1 miles per hour to kilometers per hour, use a conversion factor of 1 mile = 1.61 kilometers. Thus, the speed of bicyclists in the Tour de France on flat sections of the road is approximately 62.951 kilometers per hour.
Explanation:
To convert 39.1 mi/h to km/h, you can use the conversion factor:
1 mi = 1.61 km.
So, 39.1 mi/h * 1.61 km/mi = 62.951 km/h.
Therefore, bicyclists in the Tour de France reach speeds of approximately 62.951 km/h on flat sections of the road.