What principle is used to determine how many acres are in a section of land?

The principle used to determine the number of acres in a section of land is based on the Public Land Survey System (PLSS), which divides land into sections. Under this system, one section of land is defined as having 640 acres. Each section is one square mile, with each mile encompassing 640 acres, hence the consistent standard of 640 acres per section. This foundational knowledge is essential for understanding land measurements and property delineation in real estate.