To find the diameter of a circle when you have the circumference, you can use the formula:
\[ C = \pi \times d \]
Where:
- \( C \) is the circumference,
- \( d \) is the diameter, and
- \( \pi \) (pi) is approximately 3.14.
Given the circumference \( C = 574 \) meters, you can rearrange the formula to solve for the diameter \( d \):
\[ d = \frac{C}{\pi} \]
Substituting the values:
\[ d = \frac{574}{3.14} \approx 183.4 \]
Therefore, the circle’s diameter, rounded to the nearest tenth, is approximately 183.4 meters.