To find the circumference of a circular pool, you can use the formula:
\[ C = \pi \times d \]
where \( C \) is the circumference and \( d \) is the diameter of the circle.
Given that the diameter \( d = 10 \) m and using \( \pi \approx 3.14 \):
\[ C = 3.14 \times 10 \]
Calculating this gives:
\[ C = 31.4 \text{ m} \]
Therefore, the circumference of the circular pool is 31.4 meters.