Final answer:
To convert 13 centimeters to millimeters, you need to multiply by 10, resulting in 130 millimeters.
Step-by-step explanation:
To convert centimeters to millimeters, we need to multiply the number of centimeters by 10. Therefore, to find out how many millimeters are in 13 centimeters, we multiply 13 by 10. The result is 130 millimeters.
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