Answer: 7.87 inches
Explanation: To convert centimeters to inches, you can use the conversion factor where 1 inch is equal to 2.54 centimeters. Therefore, to convert 20 cm to inches, you divide 20 by 2.54:
\[
\text{Inches} = \frac{20 \text{ cm}}{2.54 \text{ cm/inch}} \approx 7.87 \text{ inches}
\]