Here's why:

* Precision refers to the level of detail in a measurement. The more decimal places a measurement has, the more precise it is.

Let's break down the measurements:

* 57 is the least precise, as it only shows the whole number.

* 57.2 is more precise than 57, as it includes tenths.

* 57.21 is even more precise than 57.2, as it includes hundredths.

* 57.213 is the most precise, as it includes thousandths.