Respuesta :
Answer:
C.) 19.1
Step-by-step explanation:
[tex]C=2[/tex] π[tex]r[/tex]
[tex]120=2*3.14*r[/tex]
Divide by pi
[tex]\frac{120}{3.14}=2r\\ \\38.22=2r[/tex]
Divide both sides by 2
[tex]\frac{38.22}{2} =\frac{2r}{2} \\\\19.11=r\\\\r=19.1[/tex]
Done.