1. **Stating the problem:** You asked how the segment DA equals 7.1 inches in the previous problem. 2. **Reviewing given data:** The original problem stated BC = 12 inches (diameter), DE = 10 inches (chord), AC = 6 inches, DA = 7.1 inches, FE = 5 inches, and FA = 5 inches. 3. **Clarifying segment DA:** The length DA = 7.1 inches was given as part of the problem's data, not derived from calculations. 4. **Conclusion:** Since DA was provided as a known length in the problem statement, it was not calculated but given directly. If you want to verify or calculate DA, please provide more context or the exact problem statement.