Question

What is $210\mathrm{mm}$ in $\mathrm{cm}$?

Answer 1

Convert the value of length in mm to cm

Unit conversion.

$\text{'}\mathrm{mm}\text{'}$is used for millimeters.

$\text{'}\mathrm{cm}\text{'}$is used for centimeters.

Both millimeters and centimeters are used to represent the length.

$$\begin{gathered} \because 1\mathrm{mm}=0.1\mathrm{cm} \\ \therefore 210\mathrm{mm}=210\times 0.1 \\ \Rightarrow =21\mathrm{cm} \end{gathered}$$

Hence, $210\mathrm{mm}$ is equivalent to$21\mathrm{cm}$.