To find the diameter of a circle given its circumference, you can use the formula:
\[ C = \pi \times d \]
where:
- \( C \) is the circumference,
- \( \pi \) is approximately 3.14,
- \( d \) is the diameter.
Rearranging the formula to solve for the diameter (\( d \)) gives:
\[ d = \frac{C}{\pi} \]
Now, substitute the given circumference (15.7 ft) and the value of \( \pi \) (3.14):
\[ d = \frac{15.7}{3.14} \]
Calculating this gives:
\[ d \approx 5.00 \text{ ft} \]
Therefore, the diameter of the circle is 5.00 ft.