- M^2 redirects here. For other uses, see M².
The square metre (also spelt meter, see spelling differences) is the SI derived unit of area, with symbol m². The metre or meter is a unit of Length. It is the basic unit of Length in the Metric system and in the International The metric system is a decimalised system of measurement. It exists in several variations with different choices of base units, though the choice of base units does 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 Area is a Quantity expressing the two- Dimensional size of a defined part of a Surface, typically a region bounded by a closed Curve. It is defined as the area of a square whose sides measure exactly one metre. Classification A square (regular Quadrilateral) is a special case of a Rectangle as it has four right angles and equal parallel sides The square metre is derived from the SI base unit of the metre, which in turn is defined as the length of the path travelled by light in absolute vacuum during a time interval of 1⁄299,792,458 of a second. The International System of Units (SI defines seven dimensionally independent SI base units. Length is the long Dimension of any object The length of a thing is the distance between its ends its linear extent as measured from end to end Light, or visible light, is Electromagnetic radiation of a Wavelength that is visible to the Human eye (about 400–700 This vacuum means "absence of matter" or "an empty area or space" for the cleaning appliance see Vacuum cleaner. For other uses see Time (disambiguation Time is a component of a measuring system used to sequence events to compare the durations of The second ( SI symbol s) sometimes abbreviated sec, is the name of a unit of Time, and is the International System of Units
Adding SI prefixes creates multiples and submultiples; however, as the unit is squared, the order of magnitude difference between units doubles from their comparable linear units. 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 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 For example, a kilometre is one thousand times the length of a metre, but a square kilometre is one million times the area of a square metre. The kilometre ( American spelling: kilometer) symbol km is a unit of Length in the Metric system, equal to one thousand
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SI prefixes applied to the square metre
The square metre may be used with all SI prefixes used with the metre.
| Multiple | Name | Symbol | Multiple | Name | Symbol | |
|---|---|---|---|---|---|---|
| 100 | square metre (centiare) | m² | 100 | square metre (centiare) | m² | |
| 102 | square decametre (are) | dam² | 10–2 | square decimetre | dm² | |
| 104 | square hectometre (hectare) | hm² | 10–4 | square centimetre | cm² | |
| 106 | square kilometre | km² | 10–6 | square millimetre | mm² | |
| 1012 | square megametre | Mm² | 10–12 | square micrometre | µm² | |
| 1018 | square gigametre | Gm² | 10–18 | square nanometre | nm² | |
| 1024 | square terametre | Tm² | 10–24 | square picometre | pm² | |
| 1030 | square petametre | Pm² | 10–30 | square femtometre | fm² | |
| 1036 | square exametre | Em² | 10–36 | square attometre | am² | |
| 1042 | square zettametre | Zm² | 10–42 | square zeptometre | zm² | |
| 1048 | square yottametre | Ym² | 10–48 | square yoctometre | ym² |
Conversions
A square metre is equal to:
- 0. A centiare (symbol ca) is a unit of area equal to 1 Square meter, used in some countries for measuring small land areas usually in combination with ares e A centiare (symbol ca) is a unit of area equal to 1 Square meter, used in some countries for measuring small land areas usually in combination with ares e Conversions One are is equivalent to Metric 00001 km2 (square kilometres 0 Explanation The hectare is commonly used in most countries around the world especially in domains concerned with land planning and management such as Agriculture, Square Kilometre ( US spelling square kilometer) symbol km2, is a decimal multiple of the SI unit of 000 001 square kilometre (km²)
- 10,000 square centimetres (cm²)
- 0. Square Kilometre ( US spelling square kilometer) symbol km2, is a decimal multiple of the SI unit of 000 1 hectares (ha)
- 0. Explanation The hectare is commonly used in most countries around the world especially in domains concerned with land planning and management such as Agriculture, 01 ares (a)
- 1 centiare (ca)
- 0. Conversions One are is equivalent to Metric 00001 km2 (square kilometres 0 A centiare (symbol ca) is a unit of area equal to 1 Square meter, used in some countries for measuring small land areas usually in combination with ares e 000 247 105 381 acres
- 1. The acre is a unit of Area in a number of different systems including the imperial and U 195 990 square yards
- 10. The square yard is an imperial / US customary (non- metric) unit of Area, formerly used in most of the English -speaking world but now 763 911 square feet
- 1,550. The square foot is an Imperial unit / US customary unit (non- SI non- metric) of Area, used mainly in the United States 003 1 square inches
See also
External links
- BIPM (SI maintenance agency) (home page)
- BIPM brochure (SI reference)
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