Respuesta :

Answer:

30 mm

Step-by-step explanation:

1 centimeter (cm) is one hundredth of a meter

1 millimeter (mm) is one thousandth of a meter

Thus one cm is 10 times bigger, so 3cm = 30mm

3cm in to mm is 30, explanation: multiply the length value by 10, centimeters to millimeters you would need to multiply by 10, 3x10= 30 mm!
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