Square mile

A square mile is an Imperial unit of area equal the area of a square of one statute mile (≈1,609 m) in length on each side. It is not a metric unit. The other major Imperial unit of area is the acre, of which there are 640 in a square mile.

Symbols

There is no universally agreed symbol but the following are used:

square mile
sq mile
sq mi
sq m (this can be confused with square meter)
mile/-2
mi/-2
m/-2 (this can be confused with square meter)
mile^2
mi^2
m^2 (this can be confused with square meter)
mile²
mi²
m² (this can be confused with square meter)

Conversions

1 square mile is equivalent to:

4,014,489,600 square inches
27,878,400 square feet
3,097,600 square yards
640 acres
25,899,881,103.36 square centimetres
2,589,988.110336 square metres
2.589988110336 square kilometres

In the Public Land Survey System of the U.S. and the Dominion Land Survey of Canada, the size of a standard section of land is one square mile, but always with the marginally larger survey definition.

The actual descriptive text portion of the article above (and its Contents menu) are licensed under the GNU Free Documentation License then in effect published by the Free Software Foundation. The text article uses material from http://en.wikipedia.org/wiki/Square_mile (retrieval date: 2007-05-27) and is provided "as-is" and without warranty. Permission is granted to copy, distribute and/or modify only the actual descriptive text portion of the article above (and its Contents Box) under the GNU Free Documentation License. A copy of the license is available at: http://en.wikipedia.org/wiki/Wikipedia:Text_of_the_GNU_Free_Documentation_License. Any advertisements (or active links not embedded in the actual article) and the layout or selection thereof are excluded from such license.
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