Answer: 94.24 feet.
Step-by-step explanation:
1. To solve this exercise you must apply the formula for calculate the perimeter of a circle, which is shown below:
[tex]P=2r\pi[/tex]
Where [tex]r[/tex] is the radius of the circle.
2. You can calculate the radius of the circle by dividing the diameter by 2, as following:
[tex]r=\frac{30ft}{2}\\r=15ft[/tex]
3. Substitute this value into the formula. Then, you obtain that the result is:
[tex]P=(2)(15ft)(\pi)\\P=94.24ft[/tex]