area
Let an agent handle area by definition, units, calculation, measurement and domain-specific uses.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent handle area by definition, units, calculation, measurement and domain-specific uses.
A quantity expressing the extent of a two-dimensional surface or region, measured in square units such as square metres; related technical quantities include cross sections in physics and equivalent absorption area in acoustics.
What it is for: Measuring land, floors, surfaces and cross sections.
It can be compute areas of shapes; convert area units; measure floor or land area; use cross sections in physics.
Distinguishing features
Extent of a surface
Square units
Measurement conventions vary for buildings and land
Technical senses in physics and acoustics
What it looks like
Not visible itself; the size of a surface.
Physical character
hectare: 10000 m2 - exact
acre: about 4046.86 m2
How it is recognised
Units such as m2, hectare, acre
Floor area and land area figures
Cross section in physics is measured in barns
Related models
is a kind of - category
is measured in - unit
is computed for - shapes
is related to - three dimensions
In practice
Families and kinds
geometric area
land and cadastral area
floor area
surface area
cross sections
Identifiers
SI unit square metre (m2) unit
Standards and regulation
ISO 80000-3
Floor area measurement standards such as IPMS
Cadastral survey rules
Failure modes and hazards
Different floor area definitions
Unit conversion errors
Map projection distortion of areas
Also called
+3
Where this came from
wikidata · CC0 1.0
Also registered as vr.tr.area-attribute
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Calculation Computing area.
Formulas apply.
Shape
Formula.
Shape
Area calculation.
- What is the area of this shape? measurement
- Which formula applies? definition
Units
Conversion.
Units
Units.
- What is the area in the required unit? measurement
- Is the conversion exact? boundary
Buildings Floor area.
Definitions differ.
Standard
Measurement rules.
Standard
Floor area standard.
- Which floor area standard is used: gross, net or IPMS? provenance
- What is included? definition
Comparison
Like for like.
Comparison
Comparison.
- Are areas measured the same way for comparison? boundary
- Who measured them? provenance
Land Cadastre.
Land area needs surveys.
Survey
Measurement.
Survey
Land survey.
- What is the official land area, from the cadastre? provenance
- How accurate is it? measurement
Maps
Projection.
Maps
Map areas.
- Is the map projection distorting areas? boundary
- Which projection preserves area? definition
Science Technical senses.
Area has technical uses.
Cross section
Physics.
Cross section
Cross section.
- Is a reaction cross section meant? boundary
- In which unit? definition
Acoustics
Absorption area.
Acoustics
Absorption area.
- What is the equivalent absorption area of the room? measurement
- How is it measured? provenance
What the second pass must settle
- Should area kinds be separate entries?
- How should measurement standards be linked?
- How should cross sections be split off?