To determine the total length of the line, we need to know the lengths of the two pieces you're using. If you add the lengths of both pieces together, you will get the total length of the line.

For example:

• If one piece is 3 units long and the other is 5 units long, then the total length of the line would be: $3 + 5 = 8 \text{ units}$

Could you provide the lengths of the two pieces you have?

Let me know if you'd like further details or have any questions! Here are 5 related questions that might help:

1. How do you calculate the total length if you have multiple pieces?
2. What are some real-world applications of adding lengths together?
3. How would this change if the pieces overlap or if the lengths are not straight?
4. What is the concept of "units" when measuring lengths?
5. How would you determine the total length if the pieces were in different shapes?

Tip: Always make sure your units of measurement are consistent when adding lengths (e.g., all in meters, centimeters, etc.).