Respuesta :

Step-by-step explanation:   6 3  12 12

Big Circle circumference is    C = 2π r1     r1 = OB  is set to x

and is 3 times larger than the Smaller Circle circumference  at  C = 2π   r2=OA

       C =  2π x         C/3 = 2π r2  

                     (2π x) / 3  = 2π r2

                               x/3  = r2

The circumference of the smaller in terms of x is

                      C = 2π (x/3)   which is the second answer