A
square mile (symbol
mi²) is an
imperial unit which is the
area of a
square whose side is one
mile (or 5,280
feet). That comes out to It is equal to 27,878,400 square feet. 640
acres, or
2.589988 square kilometers.
See also: Conversion of units
In
England,
the Square Mile is a traditional name for the
City of London.