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Answer:

300 mm

Step-by-step explanation:

[tex]30 \: cm \times \frac{10 \: mm}{1 \: cm} = 300 \: mm[/tex]

Answer:

300 mm

Step-by-step explanation:

1 centimeter is equal to 10 milimeters.

Multiply the 30 centimeters by 10.

30 x 10 = 300

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