For this case we have:
Note: Milliliter is a unit of volume. It is not possible to convert distance units into volume units.
We must convert the length 0.13 meters to millimeters.
By definition, 1 meter equals 1000 millimeters. That is to say:

Then, applying the rule of three we have:
1m ------------> 1000mm
0.13m --------> x
Where x represents the length of the marker in millimeters.
Resolving:


Thus, the marker measures 130 millimeters long
Answer:
130 millimeters