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Square mile

From Wikipedia, the free encyclopedia
"Mile square" redirects here. For other uses, seeMile square (disambiguation) andSquare mile (disambiguation).
Unit of area
square mile
Anaerial photograph of farmland inIndiana, with each small square being one square mile. (seeSection (United States land surveying))
General information
Unit systemImperial, United States customary units
Unit ofarea
Symbolmi2, sq mi
Conversions
1 mi2in ...... is equal to ...
   Imperial/US   
  • 4.0145×109 sq in
  • 2.7878×107 ft2
  • 3.0976×106 yd2
  • 640 acres
   SI units   
  • 2.59×106 m2
  • 2.59 km2

Thesquare mile (abbreviated assq mi and sometimes asmi2)[1] is animperial andUS unit of measure forarea. One square mile is equal to the area of asquare with each side measuring a length of onemile.[2]

Equivalents

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Various units of area, with square mile being represented as a yellow square

One square mile is equal to:

One square mile is also equivalent to:

Similarly named units

[edit]

Miles square

[edit]

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 miles ×20 miles) has an area of400 mi2; a rectangle of measuring10 miles ×40 miles also has an area of400 mi2, but is not 20 miles square.

Section

[edit]

In the United StatesPublic Land Survey System, "square mile" is an informal synonym forsection.

References

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  1. ^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.
  2. ^Davies, Charles (1872).Mathematical dictionary and cyclopedia of mathematical science. Original from Harvard University: A.S. Barnes and co. p. 582.
  3. ^François Cardarelli (2003).Encyclopaedia of scientific units, weights, and measures: their SI equivalences and origins. Springer. p. 3.ISBN 978-1-85233-682-0. Retrieved22 February 2012.
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