Square kilometre
decimal multiple of the SI unit of surface area
A square kilometer (British English spelling square kilometre, in short km²) is a unit of measurement of area. It is based on the SI unit meter.
Equal areas
changeA square that has a side length of 1 kilometer (1000 meters) has an area of one square kilometer.
- 1,000 m × 1,000 m = 1 km × 1 km = 1,000,000 m² = 1 km²[1]
There are 100 hectares in one square kilometer.[2][1] One square kilometer is just less than 0.39 square miles.[1]
Use
changeSquare kilometer is often used to say how much surface something occupies on Earth. It can, for example, be used to describe the area of a city or country. These usually take more than 1 km² on Earth.
The number of people living in a square kilometer is known as population density.
Sources
change- ↑ 1.0 1.1 1.2 "Common Weights and Measures". The Columbia Electronic Encyclopedia (6th ed.). Columbia University Press. January 24, 2017. Archived from the original on April 21, 2023. Retrieved April 21, 2023.
- ↑ "15 Questions About Units of Measurement Answered". Encyclopaedia Britannica. August 26, 2021. Retrieved April 21, 2023.
There are 100 hectares in 1 square kilometer […]
