it would be 9 ft. using the knowledge of [tex] \pi [/tex] times the diameter ([tex] \pi [/tex] equals aprox. 3.14) equal the circumference of a circle, and since we know the circumference, we need to divide that by [tex] \pi [/tex] to get the diameter.
equation: 28/3.14=8.913
rounding that would bring it to 9 ft.
