Respuesta :

Answer: The radius is 3 inches

Work Shown:

C = 2*pi*r

18.84 = 2*3.14*r ...... plug in C = 18.84 and pi = 3.14

18.84 = 6.28*r

6.28r = 18.84

r = 18.84/6.28 .... divide both sides by 6.28

r = 3