1. **State the problem:** Find the circumference of a circle with a diameter of 8 meters. 2. **Formula:** The circumference $C$ of a circle is given by the formula: $$C = \pi d$$ where $d$ is the diameter of the circle. 3. **Given:** Diameter $d = 8$ m. 4. **Calculate the circumference:** $$C = \pi \times 8$$ 5. **Simplify:** $$C = 8\pi$$ 6. **Interpretation:** The circumference is $8\pi$ meters, which is approximately $8 \times 3.1416 = 25.13$ meters. **Final answer:** $$\boxed{8\pi \text{ meters} \approx 25.13 \text{ meters}}$$