Question

How do you round 65.145 meters to three significant figures?

Answer 1

`65.1`

Explanation:

The number

`underbrace(65.145)_(5" significant figures")`

could be rounded to three significant figures as:

`underbrace(65.1)_(3" significant figures")`

Note that it is `65.1` and not `65.2` because the number next to `.1` is `4` which is smaller than `5`.

However, if the number was for example `65.155` it could be then rounded to `65.2`.