Explanation:
The question is
Convert
[tex]3120mm\text{ }to\text{ }cm[/tex]Concept:
To do this, we will use the conversion below
[tex]1mm=0.1cm[/tex]Hence,
Uidn the conversion rate, we will have trha
[tex]\begin{gathered} 1mm=0.1cm \\ 3120mm=x \\ cross\text{ multipl, we will have} \\ x=3120\times0.1 \\ x=312cm \end{gathered}[/tex]Hence,
The final amswer is
[tex]312\text{ }centimeters[/tex]