To convert millimeters to cubic millimeters, you first need to recognize that millimeters is a linear measurement, while cubic millimeters is a volume measurement.
If we assume that you are referring to a cubic object where each side has a length of 13 millimeters, the calculation would be as follows:
\[ \text{Volume} = \text{side}^3 = 13 , \text{mm} \times 13 , \text{mm} \times 13 , \text{mm} \]
\[ \text{Volume} = 13^3 = 2197 , \text{cubic millimeters} \]
However, since none of the provided options (6902, 863, 1150, 9203) match 2197, it suggests that the question might concern a different context or calculation. If you have more details on what the conversion should relate to, please let me know!