Equal areas change
Square 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.
- "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 […]