Square metre: Difference between revisions
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The '''square metre''' ([[American and British English spelling differences#-re, -er|international spelling]] as used by the [[International Bureau of Weights and Measures]]) or '''square meter''' ([[American and British English spelling differences#-re, -er|American spelling]]) is the [[SI derived unit]] of [[area]] with symbol '''m<sup>2</sup>'''.<ref>{{citation | editor=David R. Lide | chapter=INTERNATIONAL SYSTEM OF UNITS | title=[[CRC Handbook of Chemistry and Physics]] | edition=90th | year=2010}}</ref> |
The '''square metre''' ([[American and British English spelling differences#-re, -er|international spelling]] as used by the [[International Bureau of Weights and Measures]]) or '''square meter''' ([[American and British English spelling differences#-re, -er|American spelling]]) is the [[SI derived unit]] of [[area]] with symbol '''m<sup>2</sup>'''.<ref>{{citation | editor=David R. Lide | chapter=INTERNATIONAL SYSTEM OF UNITS | title=[[CRC Handbook of Chemistry and Physics]] | edition=90th | year=2010}}</ref> It is the area of a [[square]] with sides one [[metre]] in length. |
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Adding and subtracting [[SI prefix]]es creates multiples and submultiples; however, as the unit is [[exponentiate]]d, the [[quantities]] [[exponential growth|grow exponentially]] by the corresponding [[power of 10]]. For example, 1 [[kilometre]] is 10<sup>3</sup> (one [[thousand]]) times the length of 1 metre, but 1 square kilometre is (10<sup>3</sup>)<sup>2</sup> (10<sup>6</sup>, one [[million]]) times the area of 1 square metre, and 1 cubic kilometre is (10<sup>3</sup>)<sup>3</sup> (10<sup>9</sup>, one [[billion]]) cubic metres. |
Adding and subtracting [[SI prefix]]es creates multiples and submultiples; however, as the unit is [[exponentiate]]d, the [[quantities]] [[exponential growth|grow exponentially]] by the corresponding [[power of 10]]. For example, 1 [[kilometre]] is 10<sup>3</sup> (one [[thousand]]) times the length of 1 metre, but 1 square kilometre is (10<sup>3</sup>)<sup>2</sup> (10<sup>6</sup>, one [[million]]) times the area of 1 square metre, and 1 cubic kilometre is (10<sup>3</sup>)<sup>3</sup> (10<sup>9</sup>, one [[billion]]) cubic metres. |
Revision as of 15:27, 12 December 2021
Square metre | |
---|---|
Unit system | SI |
Unit of | area |
Symbol | m² or ㎡ |
![](http://upload.wikimedia.org/wikipedia/commons/thumb/7/7f/Comparison_land_area_units.svg/298px-Comparison_land_area_units.svg.png)
The square metre (international spelling as used by the International Bureau of Weights and Measures) or square meter (American spelling) is the SI derived unit of area with symbol m2.[1] It is the area of a square with sides one metre in length.
Adding and subtracting SI prefixes creates multiples and submultiples; however, as the unit is exponentiated, the quantities grow exponentially by the corresponding power of 10. For example, 1 kilometre is 103 (one thousand) times the length of 1 metre, but 1 square kilometre is (103)2 (106, one million) times the area of 1 square metre, and 1 cubic kilometre is (103)3 (109, one billion) cubic metres.
SI prefixes applied
The square metre may be used with all SI prefixes used with the metre.
Multiplication | Name | Symbol | Multiplication | 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 |
Unicode characters
Symbol | Name | Unicode number |
---|---|---|
㎡ | Square metre (Square M Squared) | U+33A1 |
㎢ | Square kilometre (Square KM Squared) | U+33A2 |
㍸ | Square decimetre (Square DM Squared) | U+3378 |
㎠ | Square centimetre (Square CM Squared) | U+33A0 |
㎟ | Square millimetre (Square MM Squared) | U+339F |
Conversions
One square metre is equal to:
- 0.000001 square kilometre (km2)
- 10000 square centimetres (cm2)
- 0.0001 hectares (ha)
- 0.001 decares (daa)
- 0.01 ares (a)
- 0.1 deciares (da)
- 1 centiare (ca)
- 0.000247105381 acres
- 0.024710538 cents
- 1.195990 square yards
- 10.763911 square feet
- 1550.0031 square inches
See also
Notes
- ^ David R. Lide, ed. (2010), "INTERNATIONAL SYSTEM OF UNITS", CRC Handbook of Chemistry and Physics (90th ed.)
- ^ Unicode Consortium (2019). "The Unicode Standard 12.0 – CJK Compatibility ❰ Range: 3300—33FF ❱" (PDF). Unicode.org. Retrieved May 24, 2019.
External links
- BIPM (SI maintenance agency) (home page)
- BIPM brochure (SI reference)