The circunference C formula is given by
[tex]C=2\pi\text{ r}[/tex]where r is the radius. In our case, r= 7 yards, then we have
[tex]C=2(3.1416)(7)[/tex]then, the answer is
[tex]C=43.9824\text{ yards}[/tex]By rounding down to the nearest hundreth, the answer is 43.98 yards