area - meaning and definition. What is area
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What (who) is area - definition

QUANTITY THAT EXPRESSES THE EXTENT OF A TWO-DIMENSIONAL SURFACE OR SHAPE, OR PLANAR LAMINA, IN THE PLANE
Area measure; Area (geometry); Area (mathematics); Area of an ellipse; Area of plane region; Area formula; Areas of Basic Shapes; Area of figure; Areas; Square length; List of area formulas; List of formulas for area; Unit of area
  • cylinder]] of the same height and radius.
  • Although there are 10 mm in 1 cm, there are 100 mm<sup>2</sup> in 1 cm<sup>2</sup>.
  • The area between two graphs can be evaluated by calculating the difference between the integrals of the two functions
  • sectors]] which rearrange to form an approximate [[parallelogram]].
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  • Integration can be thought of as measuring the area under a curve, defined by ''f''(''x''), between two points (here ''a'' and ''b'').
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  • A diagram showing how a parallelogram can be re-arranged into the shape of a rectangle.
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  • A square metre [[quadrat]] made of PVC pipe.
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  • A parallelogram split into two equal triangles.
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area         
n.
1.
Region, sphere, realm, territory, domain, district, circuit, circle, definite space.
2.
Yard, kitchen-yard, sunken space adjoining the basement.
3.
(Geom.) Superficial contents, superficies, surface.
area         
¦ noun
1. a region or part of a town, country, etc.
a space allocated for a specific use: the dining area.
a part of an object or surface.
2. a subject or range of activity.
3. the extent or measurement of a surface.
4. a sunken enclosure giving access to a basement.
Derivatives
areal adjective
Origin
C16: from L., lit. 'vacant piece of level ground'.
area         
(areas)
Frequency: The word is one of the 700 most common words in English.
1.
An area is a particular part of a town, a country, a region, or the world.
...the large number of community groups in the area...
60 years ago half the French population still lived in rural areas.
N-COUNT
2.
Your area is the part of a town, country, or region where you live. An organization's area is the part of a town, country, or region that it is responsible for.
Local authorities have been responsible for the running of schools in their areas...
If there is an election in your area, you should go and vote.
N-COUNT: poss N
3.
A particular area is a piece of land or part of a building that is used for a particular activity.
...a picnic area.
...the main check-in area located in Terminal 1.
N-COUNT: supp N
4.
An area is a particular place on a surface or object, for example on your body.
You will notice that your baby has two soft areas on the top of his head.
N-COUNT: with supp
5.
The area of a surface such as a piece of land is the amount of flat space or ground that it covers, measured in square units.
The islands cover a total area of 625.6 square kilometers...
N-VAR
6.
You can use area to refer to a particular subject or topic, or to a particular part of a larger, more general situation or activity.
...the politically sensitive area of old age pensions.
N-COUNT: usu with supp
7.
On a football pitch, the area is the same as the penalty area
. (INFORMAL)
= box
N-COUNT: usu sing, the N
8.

Wikipedia

Area

Area is the measure of a region's size on a surface. The area of a plane region or plane area refers to the area of a shape or planar lamina, while surface area refers to the area of an open surface or the boundary 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 analogue 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.

Examples of use of area
1. There is an area for pensioners, a gay area, a children‘s area, even an area for nannies.
2. This law requires that shelter area, that picnic area be a secluded area.
3. "The Cargouli area is a very dangerous area," said Col.
4. They don‘t care if it is a residential area, government area or military area,‘‘ said resident Mohammed Hayder Nangahari.
5. Under the Oslo Accords, this area is defined as Area A – namely, an area under Israeli military and civilian control.