Meters are not measured in tens. They are the base unit of length in the metric system, and the metric system is based on ten.

Here's why:

* Decimal System: The metric system uses a decimal system, meaning it's based on powers of ten. This makes it easier to convert between units.

* Prefixes: Different units within the metric system are created by adding prefixes to "meter". These prefixes represent powers of ten:

* Kilo (km) = 1000 meters

* Hecto (hm) = 100 meters

* Deka (dam) = 10 meters

* Deci (dm) = 0.1 meters

* Centi (cm) = 0.01 meters

* Milli (mm) = 0.001 meters

So, while the meter itself isn't measured in tens, the metric system as a whole is built upon the decimal system, making it easy to work with units of ten.