Square kilometre (U.S. spelling: square kilometer), symbol km², is a decimal multiple of the SI unit of surface area, the square metre, one of the SI derived units. The United States of America —commonly referred to as the Surface area is the measure of how much exposed Area an object has M^2 redirects here For other uses see M². CM2 redirects here SI derived units are part of the SI system of measurement units and are derived from the seven SI base units They are derived from SI basic units/defined 1 km² is equal to:

• 1,000,000 m²
• 100 ha (hectare)

Conversely:

• 1 m² = 0. The metre or meter is a unit of Length. It is the basic unit of Length in the Metric system and in the International Explanation The hectare is commonly used in most countries around the world especially in domains concerned with land planning and management such as Agriculture, 000 001 (10⁻⁶) km²
• 1 hectare = 0. 01 (10⁻²) km²
• 1 square mile = 2. The square mile is an imperial and US unit of Area equal the area of a square of one statute mile. 589 988 km²
• 1 acre = 0. 004 047 km², 0. 404 7 ha or 4047 m²

Note: "km²" means (km)², square kilometre or kilometre squared, and not k(m²), kilo–square metre. For example, 3 km² is equal to 3 × (1,000 m)² = 3,000,000 m², not 3,000 m².

Comparative order

The 10⁶ m² orders of magnitude page gives comparisons with geographic areas. To aid in the comparison of sizes of different geographic regions areas between 1  Km² (100 Hectares and 10 km² (1000 hectares are listed below An order of magnitude is the class of scale or magnitude of any amount where each class contains values of a fixed ratio to the class preceding it

A hectare (10⁴ m²) is less than a square kilometer which is less than a square megametre (10¹² m²). Mega- (symbol M) is an SI prefix in the SI system of units denoting a factor of 106, 1000000 (one Million

Source

• Conversion Factors. MINFILE Coding Manual. Ministry of Energy, Mines and Petroleum Resources. Government of British Columbia. Retrieved on 2007-10-13. Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 54 - Nero ascends to the Roman throne 409 - Vandals and Alans crossed the Pyrenees

See also

Conversion of units. Conversion of units refers to conversion factors between different Units of measurement for the same Quantity. SI prefix for the precise meaning of the prefix "k"

Square Kilometre Array, a proposed radio telescope which is intended to have a collecting area of approximately one square kilometre. An SI prefix (also known as a metric prefix) is a name or associated symbol that precedes a unit of measure (or its symbol to form a Decimal multiple or The Square Kilometre Array (SKA is a Radio telescope in development which will have a total collecting area of approximately one Square kilometre. A radio telescope is a form of directional Radio antenna used in Radio astronomy and in tracking and collecting data from Satellites

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