The circumference of a circle of radius r is given by:
[tex]C=2\pi r[/tex]Substitute r=0.75 to find the circumferece:
[tex]\begin{gathered} C=2\pi(0.75) \\ =1.5\pi \\ \approx4.71 \end{gathered}[/tex]Therefore, the circumference is equal to 1.5π inches, which is approximately 4.71 inches.