Whats the difference between a square mile and a normal 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[edit]

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[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 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[edit]

In the United States Public Land Survey System, "square mile" is an informal synonym for section.

References[edit]

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. Retrieved 22 February 2012.

• Formula Conversion, Square miles to numerous area units with algebraic steps and unit cancellation shown

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