The rule of the circumference of a circle is
[tex]C=2\pi r[/tex]Since C = 4.25 inches
[tex]2\pi r=4.25[/tex]Divide both sides by 2 pi
[tex]\begin{gathered} \frac{2\pi r}{2\pi}=\frac{4.25}{2\pi} \\ r=\frac{17}{8\pi} \end{gathered}[/tex]The answer is B
4.25/2pi