Final answer:
The length of segment CD can be found by equating the distance the wheel travels (dCM) with the arc length RO as shown in Figure 11.4.
Step-by-step explanation:
The length of segment CD can be found by equating the distance the wheel travels (dCM) with the arc length RO as shown in Figure 11.4. The arc length RO represents the length of the outer surface of the wheel that maps onto the ground. By equating these two distances, we can find the length of segment CD.