Square mile
The square mile (abbreviated as sq mi and sometimes as mi2)[1] is an imperial and US unit of measure for area. One square mile is an area equal to the area of a square with sides of length one mile.[2]
Equivalents[]
One square mile is equal to:
- 4,014,489,600 square inches[3]
- 27,878,400 square feet
- 3,097,600 square yards
- 2,560 roods
- 640 acres
One square mile is also equivalent to:
- 2,589,988.1103360 square metres
- 258.99881103360 hectares
- 2.5899881103360 square kilometres
Similarly-named units[]
Miles square[]
Square miles should not be confused with miles square, a square region with each side having a length of the value given. For example, a region which is 20 miles square (20 mi × 20 mi) has an area of 400 sq mi; a rectangle of measuring 10 mi × 40 mi also has an area of 400 sq mi, but is not 20 miles square.
Section[]
In the United States Public Land Survey System, "square mile" is an informal synonym for section.
References[]
- ^ Rowlett, Russ (September 1, 2004). "S", How Many? A Dictionary of Units of Measurement. University of North Carolina at Chapel Hill. Retrieved February 22, 2012.
- ^ Davies, Charles (1872). Mathematical dictionary and cyclopedia of mathematical science. Original from Harvard University: A.S. Barnes and co. p. 582.
- ^ François Cardarelli (2003). Encyclopaedia of scientific units, weights, and measures: their SI equivalences and origins. Springer. p. 3. ISBN 978-1-85233-682-0. Retrieved 22 February 2012.
Categories:
- Units of area
- Customary units of measurement in the United States
- Imperial units