1. **Problem Statement:** Find the circumference of the circle with diameter 4 cm using $\pi = 3.14$. 2. **Formula:** The circumference $C$ of a circle is given by $$C = \pi \times d$$ where $d$ is the diameter. 3. **Calculation:** Substitute $d = 4$ cm and $\pi = 3.14$: $$C = 3.14 \times 4$$ 4. **Simplify:** $$C = 12.56 \text{ cm}$$ 5. **Answer:** The circumference of the circle is $12.56$ cm. This completes the solution for part (A).