The tortoise and rabbit race, the route is as shown in the figure. The tortoise walks on the circumference of the big circle outside, and the rabbit walks on the circumference of two small circles. Is

The tortoise and rabbit race, the route is as shown in the figure. The tortoise walks on the circumference of the big circle outside, and the rabbit walks on the circumference of two small circles. Is the game fair? Why? Fair.

Let the tortoise take the road C (Wu) and the rabbit take the road C (Rabbit). Let the diameter of the left small circle be x and the diameter of the right small circle be10-x.

C (Ukraine) = 10*π

C (rabbit) =x *π+( 10-x)*π.

= 10*π

So the distance is the same.