KILOMETER used as a noun is very rare. The kilometre is a unit of length in the metric system equal to one thousand metres. This is a glossary of math definitions for common and important mathematics terms used in arithmetic geometry and statistics.
California is 410000 km 2 in area.
Share Flipboard Email. California is 410000 km 2 in area. The symbol is km 2 Example. A kilometer is equal to about 62100 of a mile and a mile is equal to about 161 kilometers.