Final answer:
To find the length of segment PS, add the lengths of segments PR (12.6 mm) and RS (7.3 mm) to get PS, which is 19.9 mm.
Step-by-step explanation:
The question asks to find the length of segment PS given the lengths of segments PR and RS. Since these three points are collinear and segment PS is the sum of segments PR and RS, we can simply add the lengths of PR and RS to find the length of PS.
Therefore, to find PS:
- Take the length of PR, which is 12.6 mm.
- Add the length of RS, which is 7.3 mm.
- The sum gives us the length of PS, which is PR + RS = 12.6 mm + 7.3 mm = 19.9 mm.