To find the diameter (d) of a circle using the given circumference (C), you can use the formula:
\[ d = \frac{C}{\pi} \]
Given that
- \( C = 47.1 \) ft
- \( \pi \approx 3.14 \)
Now, plug in the values:
\[ d = \frac{47.1}{3.14} \]
Now, calculate:
\[ d \approx 15.0 \text{ ft} \]
So, the diameter \( d \) is approximately 15.0 feet.