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  2. Square mile - Wikipedia

    en.wikipedia.org/wiki/Square_mile

    The square mile (abbreviated as sq mi and sometimes as mi 2) [1] is an imperial and US unit of measure for area. ... 27,878,400 square feet; 3,097,600 square yards;

  3. List of conversion factors - Wikipedia

    en.wikipedia.org/wiki/List_of_conversion_factors

    Legally defined as 1.033 English feet in 1859 ... square mile: sq mi ≡ 1 mi × 1 mi ... = 4.4704 × 10 −1 m/s 2: mile per minute per second:

  4. League (unit) - Wikipedia

    en.wikipedia.org/wiki/League_(unit)

    Legua nautica (nautical league): Between 1400 and 1600 the Spanish nautical league was equal to four Roman miles of 4,842 feet, making it 19,368 feet (5,903 metres or 3.1876 modern nautical miles). However, the accepted number of Spanish nautical leagues to a degree varied between 14 1/6 to 16 2/3, so in actual practice the length of a Spanish ...

  5. Nautical mile - Wikipedia

    en.wikipedia.org/wiki/Nautical_mile

    A nautical mile is a unit of length used in air, marine, and space navigation, and for the definition of territorial waters. [2] [3] [4] Historically, it was defined as the meridian arc length corresponding to one minute (⁠ 1 / 60 ⁠ of a degree) of latitude at the equator, so that Earth's polar circumference is very near to 21,600 nautical miles (that is 60 minutes × 360 degrees).

  6. List of United States cities by area - Wikipedia

    en.wikipedia.org/wiki/List_of_United_States...

    San Francisco is an extreme example: water makes up nearly 80% of its total area of 232 square miles (601 km 2). In many cases an incorporated place is geographically large because its municipal government has merged with the government of the surrounding county.

  7. Chain (unit) - Wikipedia

    en.wikipedia.org/wiki/Chain_(unit)

    The only exceptions to this rule are special requirements for measurement in feet in mineral surveys and townsite surveys. [13] Linear Measurement 1 Chain = 100 links or 66 feet 1 Mile = 80 chains or 5,280 feet. Area Measurement 1 Acre = 10 square chains or 43,560 square feet 1 square mile = 640 acres

  8. Help:Convert units - Wikipedia

    en.wikipedia.org/wiki/Help:Convert_units

    Unit type Unit code Unit name Area: a: are: m2: square metre Charge: coulomb: coulomb Energy: J: joule Force: N: newton Length: m: metre Magnetic field strength: T ...

  9. Geographical mile - Wikipedia

    en.wikipedia.org/wiki/Geographical_mile

    While debating what became the Land Ordinance of 1785, Thomas Jefferson's committee wanted to divide the public lands in the west into "hundreds of ten geographical miles square, each mile containing 6,086 and 4-10ths of a foot" and "sub-divided into lots of one mile square each, or 850 and 4-10ths of an acre". [9]