This page is a progressive and labelled list of the SI area orders of magnitude, with certain examples appended to some list objects.
Factor (m^{2}) | Multiple | Value | Item |
---|---|---|---|
10^{−70} | 2.6×10^{−70} m^{2} | Planck area, ^{[1]} | |
10^{−52} | 10^{−52} m^{2} | 1 shed^{[2]} | |
10^{−48} | 1 square yoctometre (ym^{2}) | 1 ym^{2} | |
10^{−43} | 100,000 ym^{2} | 1 femtobarn^{[3]} | |
10^{−42} | 1 square zeptometre (zm^{2}) | 1 zm^{2} | |
10^{−36} | 1 square attometre (am^{2}) | 1 am^{2} | |
10^{−30} | 1 square femtometre (fm^{2}) | 1 fm^{2} | |
10^{−29} | 66.52 fm^{2} | Thomson cross-section of the electron^{[4]} | |
10^{−28} | 100 fm^{2} | 1 barn, roughly the cross-sectional area of a uranium nucleus^{[5]} | |
10^{−24} | 1 square picometre (pm^{2}) | 1 pm^{2} | |
10^{−20} | 1 square angstrom (Å^{2}) | 10,000 pm^{2} | |
10^{−19} | 100,000 pm^{2} | Area of a lipid bilayer, per molecule^{[6]} | |
75-260,000 pm^{2} | Surface area of the 20 standard amino acids^{[7]} | ||
10^{−18} | 1 square nanometre (nm^{2}) | 1 nm^{2} | |
10^{−16} | 100 nm^{2} | Globular proteins: solvent-accessible surface area of a typical globular protein, having a typical molecular mass of ~35000 u (quite variable)^{[8]} | |
10^{−14} | 17,000 nm^{2} | Cross-sectional area of a nuclear pore complex in vertebrates^{[9]} | |
10^{−12} | 1 square micrometre (μm^{2}) | 6 μm^{2} | Surface area of an E. coli bacterium^{[10]} |
10^{−10} | 100 μm^{2} | Surface area of a red blood cell^{[11]} | |
10^{−9} | 6,000 μm^{2 - }110,000 μm^{2} | Range of common LCD screen pixel sizes^{[12]} | |
7,000 μm^{2} | Area of a dot printed using 300 dots per inch resolution^{[13]} | ||
8,000 μm^{2} | Cross-sectional area of a straight human hair that is 100 μm^{[14]} in diameter^{[15]} |
Factor (m^{2}) | Multiple | Value | Item |
---|---|---|---|
10^{−8} | 55,000 μm^{2} | Size of a pixel on a typical modern computer display | |
10^{−7} | 2-400,000 μm^{2} | Cross-sectional area of a mechanical pencil lead (0.5-0.7 mm in diameter)^{[16]} | |
10^{−6} | 1 square millimetre (mm^{2}) | 1–2 mm^{2} | Area of a human fovea^{[17]} |
2 mm^{2} | Area of the head of a pin | ||
10^{−5} | 30–50 mm^{2} | Area of a 6–8 mm hole punched in a piece of paper by a hole punch^{[18]} | |
10^{−4} | 1 square centimetre (cm^{2}) | 290 mm^{2} | Area of one side of a U.S. penny^{[19]}^{[20]} |
500 mm^{2} | Area of a typical postage stamp | ||
10^{−3} | 1,100 mm^{2} | Area of a human retina^{[21]} | |
4,600 mm^{2} | Area of the face of a credit card^{[22]} | ||
4,800 mm^{2} | Largest side of a cigarette box | ||
10^{−2} | 1 square decimetre (dm^{2}) | 10,000 mm^{2} | Index card (3 × 5 inches)^{[23]} |
60,000 mm^{2} | American letter paper (11 × 8.5 inches, "A" size) | ||
62,370 mm^{2} | International A4 paper (210 × 297 mm) | ||
92,903 mm^{2} | 1 square foot^{[24]} | ||
10^{−1} | 125,000 mm^{2} | International A3 paper (297 × 420 mm) | |
180,000 mm^{2} | Surface area of a basketball (diameter 24 cm)^{[25]}^{[26]} | ||
250,000 mm^{2} | International A2 paper (420 × 594 mm) | ||
500,000 mm^{2} | International A1 paper (594 × 841 mm) |
Factor (m^{2}) | Multiple | Value | Item |
---|---|---|---|
10^{0} | 1 square metre | 1 m^{2} | International A0 paper (841 × 1189 mm) |
1.73 m^{2} | A number commonly used as the average body surface area of a human^{[27]} | ||
2–4 m^{2} | Area of the top of an office desk | ||
10^{1} | 10–20 m^{2} | A parking space | |
70 m^{2} | Approximate surface area of a human lung^{[28]} | ||
10^{2} | 1 square decametre (dam^{2}) | 100 m^{2} | One are (a) |
162 m^{2} | Size of a volleyball court (18 × 9 metres)^{[29]} | ||
202 m^{2} | Floor area of a median suburban three-bedroom house in the US in 2010: 2,169 sq ft (201.5 m^{2})^{[30]} | ||
261 m^{2} | Size of a tennis court^{[31]} | ||
10^{3} | 1,000 m^{2} | Surface area of a modern stremma or dunam | |
1,250 m^{2} | Surface area of the water in an Olympic-size swimming pool^{[32]} | ||
4,047 m^{2} | 1 acre^{[33]} | ||
5,400 m^{2} | Size of an American football field^{[34]}^{[35]} | ||
7,140 m^{2} | Size of a typical football (soccer) field^{[36]}^{[37]} | ||
10^{4} | 1 square hectometre (hm^{2}) | 10,000 m^{2} | 1 hectare (ha)^{[38]} |
17,000 m^{2} | Approximate area of a cricket field (theoretical limits: 6,402 m^{2} to 21,273 m^{2})^{[39]} | ||
22,100 m^{2} | Area of a Manhattan city block | ||
53,000 m^{2} | Base of the Great Pyramid of Giza^{[40]}^{[41]} | ||
10^{5} | 195,000 m^{2} | Irish National Botanic Gardens^{[42]} | |
440,000 m^{2} | Vatican City^{[43]} | ||
600,000 m^{2} | Total floor area of the Pentagon^{[44]} | ||
10^{6} | 1 square kilometre (km^{2}) | 2 km^{2} | Monaco (country ranked 192nd by area)^{[45]} |
2.59 km^{2} | 1 square mile^{[46]} | ||
2.9 km^{2} | City of London (not all of modern London)^{[47]} | ||
10^{7} | 59.5 km^{2} | Manhattan Island (land area)^{[48]} | |
61 km^{2} | San Marino^{[49]} |
Factor (m^{2}) | Multiple | Value | Item |
---|---|---|---|
10^{8} | 105 km^{2} | Paris (inner city only)^{[50]} | |
110 km^{2} | Walt Disney World^{[51]} | ||
272 km^{2} | Taipei City^{[52]} | ||
630 km^{2} | Toronto^{[53]} | ||
10^{9} | 1100 km^{2} | Hong Kong^{[54]} | |
1290 km^{2} | Los Angeles, California, United States (city)^{[55]} | ||
1962 km^{2} | Jacksonville, Florida; largest city in the Continental US^{[56]} | ||
2188 km^{2} | Tokyo^{[57]} | ||
5780 km^{2} | Administrative area of Bali^{[58]} | ||
8030 km^{2} | Community of Madrid, Spain | ||
10^{10} | 11,000 km^{2} | Jamaica^{[59]} | |
30,528 km^{2} | Belgium | ||
68,870 km^{2} | Lake Victoria^{[60]} | ||
84,000 km^{2} | Austria^{[61]} | ||
10^{11} | 100,000 km^{2} | South Korea^{[62]} | |
167,996 km^{2} | Jiuquan in China | ||
301,338 km^{2} | Italy^{[63]} | ||
357,000 km^{2} | Germany^{[64]} | ||
377,900 km^{2} | Japan^{[65]} | ||
510,000 km^{2} | Spain^{[66]} | ||
780,000 km^{2} | Turkey^{[67]} | ||
10^{12} | 1 square megametre (Mm^{2}) | 1.0 Mm^{2} | Egypt (country ranked 29th by area)^{[68]} |
2 Mm^{2} | Mexico | ||
3.10 Mm^{2} | Sakha (Yakutia) Republic in Russia (largest subnational governing body)^{[69]} | ||
5 Mm^{2} | Largest extent of the Roman Empire^{[70]}^{[71]} | ||
7.74 Mm^{2} | Australia (country ranked 6th by area)^{[72]} | ||
8.5 Mm^{2} | Brazil | ||
9.5 Mm^{2} | China/ United States of America | ||
10^{13} | 10 Mm^{2} | Canada (including water)^{[73]} | |
14 Mm^{2} | Antarctica^{[74]} | ||
14 Mm^{2} | Arable land worldwide^{[75]} | ||
16.6 Mm^{2} | Surface area of Pluto^{[76]} | ||
17 Mm^{2} | Russia (country ranked 1st by area)^{[77]} | ||
30 Mm^{2} | Africa^{[78]} | ||
35.5 Mm^{2} | Largest extent of the British Empire^{[79]} | ||
38 Mm^{2} | Surface area of the Moon^{[80]} | ||
77 Mm^{2} | Atlantic Ocean^{[81]} | ||
10^{14} | 144 Mm^{2} | Surface area of Mars^{[82]} | |
150 Mm^{2} | Land area of Earth^{[83]} | ||
156 Mm^{2} | Pacific Ocean^{[84]} | ||
360 Mm^{2} | Water area of Earth^{[83]} | ||
510 Mm^{2} | Total surface area of Earth^{[83]} |
Factor (m^{2}) | Multiple | Value | Item |
---|---|---|---|
10^{15} | 1,000 Mm^{2} | Surface area of the white dwarf, Van Maanen's star | |
7,600 Mm^{2} | Surface area of Neptune^{[85]} | ||
10^{16} | 43,000 Mm^{2} | Surface area of Saturn^{[86]} | |
61 000 Mm^{2} | Surface area of Jupiter,^{[87]} the "surface" area of the spheroid (calculated from the mean radius as reported by NASA). The cross-sectional area of Jupiter, which is the same as the "circle" of Jupiter seen by an approaching spacecraft, is almost exactly one quarter the surface-area of the overall sphere, which in the case of Jupiter is approximately 1.535e+16 square metres. | ||
10^{17} | 2-600 000 Mm^{2} | Surface area of the brown dwarf CT Chamaeleontis B. | |
460,000 Mm^{2} | Area swept by the Moon's orbit of Earth | ||
10^{18} | 1 square gigametre (Gm^{2}) | 6.1 Gm^{2} | Surface area of the Sun^{[88]} |
10^{19} | 30 Gm^{2} | Surface area of the star Vega | |
10^{20} | 100 Gm^{2} | ||
10^{21} | 1 000 Gm^{2} | ||
10^{22} | 11 000 Gm^{2} | Area swept by Mercury's orbit around the Sun | |
37 000 Gm^{2} | Area swept by Venus' orbit around the Sun | ||
71 000 Gm^{2} | Area swept by Earth's orbit around the Sun | ||
10^{23} | 160 000 Gm^{2} | Area swept by Mars' orbit around the Sun | |
281 000 Gm^{2} | Surface area of a Dyson sphere with a radius of 1 AU | ||
10^{24} | 1 square terametre (Tm^{2}) | 1.9 Tm^{2} | Area swept by Jupiter's orbit around the Sun |
6.4 Tm^{2} | Area swept by Saturn's orbit around the Sun | ||
8.5 Tm^{2} | Surface area of the red supergiant star Betelgeuse | ||
10^{25} | 24 Tm^{2} | Surface area of the hypergiant star VY Canis Majoris | |
26 Tm^{2} | Area swept by Uranus' orbit around the Sun | ||
64 Tm^{2} | Area swept by Neptune's orbit around the Sun | ||
10^{26} | 110 Tm^{2} | Area swept by Pluto's orbit around the Sun |
Factor (m^{2}) | Multiple | Value | Item |
---|---|---|---|
10^{30} | 1 square petametre (Pm^{2}) | ||
10^{31} | 10 Pm^{2} | ||
10^{32} | 200 Pm^{2} | Roughly the surface area of an Oort Cloud | |
300 Pm^{2} | Roughly the surface area of a Bok globule | ||
10^{33} | 1 000 Pm^{2} | ||
10^{34} | 30 000 Pm^{2} | Roughly the surface area of The Bubble nebula | |
10^{35} | 100 000 Pm^{2} | ||
10^{36} | 1 square exametre (Em^{2}) | ||
... | |||
10^{41} | 700 000 Em^{2} | Roughly the area of Milky Way's galactic disk | |
10^{42} | 1 square zettametre (Zm^{2}) | ||
... | |||
10^{48} | 1 square yottametre (Ym^{2}) | ||
10^{54} | 2400 Ym^{2} | Surface area of the observable universe^{[89]} |
The playing court is a rectangle measuring 18 x 9 m, surrounded by a free zone which is a minimum of 3 m wide on all sides.
4046.87
For the Olympics, fields are supposed to measure exactly 105 meters long and 68 meters wide
average length of the four sides is 230.364 meters
Floor area of 6.5 million square feet, 34 acres, 13.8 hectares, of which 3.7 million square feet are used for offices.
30,500 acres
498.29 square miles
30,065,000 sq km
Area is the quantity that expresses the extent of a two-dimensional figure or shape, or planar lamina, in the plane. Surface area is its analog on the two-dimensional surface of a three-dimensional object. Area can be understood as the amount of material with a given thickness that would be necessary to fashion a model of the shape, or the amount of paint necessary to cover the surface with a single coat. It is the two-dimensional analog of the length of a curve (a one-dimensional concept) or the volume of a solid (a three-dimensional concept).
The area of a shape can be measured by comparing the shape to squares of a fixed size. In the International System of Units (SI), the standard unit of area is the square metre (written as m2), which is the area of a square whose sides are one metre long. A shape with an area of three square metres would have the same area as three such squares. In mathematics, the unit square is defined to have area one, and the area of any other shape or surface is a dimensionless real number.
There are several well-known formulas for the areas of simple shapes such as triangles, rectangles, and circles. Using these formulas, the area of any polygon can be found by dividing the polygon into triangles. For shapes with curved boundary, calculus is usually required to compute the area. Indeed, the problem of determining the area of plane figures was a major motivation for the historical development of calculus.For a solid shape such as a sphere, cone, or cylinder, the area of its boundary surface is called the surface area. Formulas for the surface areas of simple shapes were computed by the ancient Greeks, but computing the surface area of a more complicated shape usually requires multivariable calculus.
Area plays an important role in modern mathematics. In addition to its obvious importance in geometry and calculus, area is related to the definition of determinants in linear algebra, and is a basic property of surfaces in differential geometry. In analysis, the area of a subset of the plane is defined using Lebesgue measure, though not every subset is measurable. In general, area in higher mathematics is seen as a special case of volume for two-dimensional regions.Area can be defined through the use of axioms, defining it as a function of a collection of certain plane figures to the set of real numbers. It can be proved that such a function exists.
Barn (unit)A barn (symbol: b) is a unit of area equal to 10−28 m2 (100 fm2). Originally used in nuclear physics for expressing the cross sectional area of nuclei and nuclear reactions, today it is also used in all fields of high-energy physics to express the cross sections of any scattering process, and is best understood as a measure of the probability of interaction between small particles. A barn is approximately the cross-sectional area of a uranium nucleus. The barn is also the unit of area used in nuclear quadrupole resonance and nuclear magnetic resonance to quantify the interaction of a nucleus with an electric field gradient. While the barn is not an SI unit, the SI standards body acknowledges its existence due to its continued use in particle physics.
List of countries and dependencies by areaThis is a list of the world's countries and their dependent territories by area, ranked by total area.
Entries in this list include, but are not limited to, those in the ISO 3166-1 standard, which includes sovereign states and dependent territories. Largely unrecognised states not in ISO 3166-1 are included in the list in ranked order, but are not given a rank number. The areas of such largely unrecognised states are in most cases also included in the areas of the more widely recognised states that claim the same territory; see the notes in the "notes" column for each country for clarification.
Not included in the list are individual country claims to parts of the continent of Antarctica, entities such as the European Union that have some degree of sovereignty but do not consider themselves to be sovereign countries or dependent territories, and unrecognised micronations such as the Principality of Sealand.
This list includes three measurements of area:
Total area: the sum of land and water areas within international boundaries and coastlines.
Land area: the aggregate of all land within international boundaries and coastlines, excluding water area.
Water area: the sum of the surface areas of all inland water bodies (lakes, reservoirs, and rivers) within international boundaries and coastlines. Coastal internal waters (some small bays) may be included. Territorial waters are not included unless otherwise noted. Contiguous zones and exclusive economic zones are not included.Data is taken from the United Nations Statistics Division unless otherwise noted.
List of country subdivisions by areaThis is a list of the 50 largest country subdivisions and dependent territories by area (including surface water) in square kilometres.
List of geographic bodies by areaThis article contains lists of geographic bodies by area.
List of political and geographic subdivisions by total areaThis is an index of a series of comprehensive lists of continents, countries, and first level administrative country subdivisions such as states, provinces, and territories, as well as certain political and geographic features of substantial area. Some divisions are listed twice, with one listing including territory that is excluded in the other for various reasons, including territorial disputes. Names of currently existing countries are bolded, while names of geographic features are italicized. There is intentional overlap between the lists in order to maximize ease of use.
Measuring instrumentA measuring instrument is a device for measuring a physical quantity. In the physical sciences, quality assurance, and engineering, measurement is the activity of obtaining and comparing physical quantities of real-world objects and events. Established standard objects and events are used as units, and the process of measurement gives a number relating the item under study and the referenced unit of measurement. Measuring instruments, and formal test methods which define the instrument's use, are the means by which these relations of numbers are obtained. All measuring instruments are subject to varying degrees of instrument error and measurement uncertainty.
Scientists, engineers and other humans use a vast range of instruments to perform their measurements. These instruments may range from simple objects such as rulers and stopwatches to electron microscopes and particle accelerators. Virtual instrumentation is widely used in the development of modern measuring instruments.
Rai (unit)A rai (Thai: ไร่, pronounced [râj]) is a unit of area equal to 1,600 square metres (16 ares, 0.16 hectares, 0.3954 acres), and is used in measuring land area for a cadastre or cadastral map. Its current size is precisely derived from the metre, but is neither part of nor recognized by the modern metric system, the International System (SI).
The rai is defined as 1 square sen or (40 m × 40 m). It can be divided in four ngaan or 400 square wa.
It is commonly used in Thailand. Although recognized by the SI, its use is not encouraged. The word rai also means plantation.
Square footThe square foot (plural square feet; abbreviated sq. ft, sf, ft2) is an imperial unit and U.S. customary unit (non-SI, non-metric) of area, used mainly in the United States and partially in Bangladesh, Canada, Ghana, Hong Kong, India, Malaysia, Nepal, Pakistan, Singapore and the United Kingdom. It is defined as the area of a square with sides of 1 foot.
Although the pluralisation is regular in the noun form, when used as an adjective, the singular is preferred. So, a flat measuring 700 square feet could be described as a 700 square-foot flat. This corresponds to common linguistic usage of foot.
Square metreThe 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.Adding and subtracting SI prefixes creates multiples and submultiples; however, as the unit is exponentiated, the quantities grow geometrically by the corresponding power of 10. For example, a kilometre is 103 (a thousand) times the length of a metre, but a square kilometre is 1032 (106, a million) times the area of a square metre, and a cubic kilometre is 1033 (109, a billion) cubic metres.
Square yardThe square yard (India: gaj) is an imperial unit of area, formerly used in most of the English-speaking world but now generally replaced by the square metre, however it is still in widespread use in the U.S., Canada, the U.K. and India. It is defined as the area of a square with sides of one yard (three feet, thirty-six inches, 0.9144 metres) in length.
Tarang waA tarang wa (Thai: ตารางวา, RTGS: tarang wa, IPA: [tāːrāːŋ wāː]) or square wa, sometimes transliterated as 'waa' or 'wah' is a unit of area used in Thailand for measuring land or property. It is defined as the area of a square whose sides measure exactly one wa (two metres), equivalent to four square metres. Although its current size is precisely derived from the metre, it is neither part of nor recognized by the modern metric system, the International System (SI).
The square wa equals 1/100 ngaan or 1/400 rai, two units of area frequently used in Thailand. It also equals 1/25 are, another metre-derived unit of area not officially part of the SI.
As with many terms normally written with the Thai alphabet, there are many variant transliterations into English, e.g. dta-raang waa and tarang wah.
Wa (unit)Wa (Thai: วา [wāː], also waa or wah, abbreviated ว.) is a unit of length, equal to two metres (2 m) or four sok (ศอก.) Wa as a verb means to outstretch (one's) arms to both sides, which relates to the fathom's distance between the fingertips of a man's outstretched arms. The 1833 Siamese-American Treaty of Amity and Commerce, reads, "[The] Siamese fathom...being computed to contain 78 English or American inches, corresponding to 96 Siamese inches." The length then would have been equivalent to a modern 1.981 metres. Since conversion to the metric system in 1923, the length as derived from the metre is precisely two metres, but the unit is neither part of nor recognized by the modern International metric system (SI).
Wa also occurs as a colloquialism for "square wa" (tarang wa) a unit of area abbreviated ตร.ว. or ว๒.)
As with many terms normally written in the Thai alphabet, romanization of Thai causes spelling variants such as waa and wah.
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