To find the diameter (d) of a circle using the circumference (C), you can use the formula:
\[ d = \frac{C}{\pi} \]
In this case, you're given that the circumference \( C = 69.08 \) ft, and you are using \( \pi \approx 3.14 \).
Now plug in the values:
\[ d = \frac{69.08}{3.14} \]
Calculating that:
\[ d = 22.00 \text{ ft} \]
So, the diameter \( d \) of the circle is 22.00 feet.