1. **State the problem:** We need to find the circumference of a circle with radius $r = 5.4$ inches. 2. **Formula:** The circumference $C$ of a circle is given by the formula: $$C = 2 \pi r$$ where $\pi$ is approximately 3.1416. 3. **Substitute the radius:** $$C = 2 \times 3.1416 \times 5.4$$ 4. **Calculate:** $$C = 2 \times 3.1416 \times 5.4 = 33.92928$$ 5. **Round to the nearest tenth:** $$C \approx 33.9$$ inches. **Final answer:** The circumference of the circle is approximately $33.9$ inches.