1. **State the problem:** Find the circumference of a circle with diameter 20 ft, using $\pi = 3.14$, and round to the nearest hundredth. 2. **Formula:** The circumference $C$ of a circle is given by $$C = \pi d$$ where $d$ is the diameter. 3. **Substitute the given values:** $$C = 3.14 \times 20$$ 4. **Calculate:** $$C = 62.8$$ 5. **Round to the nearest hundredth:** Since $62.8$ is already at one decimal place, it is $62.80$ when rounded to the nearest hundredth. **Final answer:** The circumference is $62.80$ ft.