Units of Area - Maple Help

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Units of Area

Description

• 

Area has the dimension length squared. The SI composite unit of area is the meter squared.

• 

Maple knows the units of area listed in the following table.

Name

Symbols

Context

Alternate Spellings

Prefixes

 

 

 

 

 

are

a

SI *

ares

 

hectare

ha

SI *

hectares

 

centare

ca

SI *

centares

 

barn

b

SI *

barns

 

shed

 

standard *

sheds

 

 

 

 

 

 

mil

 

circular

mils

 

 

 

 

 

 

rood

 

standard *

roods

 

 

 

US_survey

 

 

 

 

 

 

 

acre

 

standard *

acres

 

 

 

US_survey

 

 

 

 

 

 

 

lot

 

standard *

lots

 

 

 

US_survey

 

 

 

 

 

 

 

section

 

standard *

sections

 

 

 

US_survey

 

 

 

 

 

 

 

township

 

standard *

townships

 

 

 

US_survey

 

 

darcy

 

standard

darcies

SI

tsubo

 

JP

 

 

planck_area

 

planck *

planck_areas

 

  

An asterisk ( * ) indicates the default context, an at sign (@) indicates an abbreviation, and under the prefixes column, SI indicates that the unit takes all SI prefixes, IEC indicates that the unit takes IEC prefixes, and SI+ and SI- indicate that the unit takes only positive and negative SI prefixes, respectively.  Refer to a unit in the Units package by indexing the name or symbol with the context, for example, are[SI] or b[SI]; or, if the context is indicated as the default, by using only the unit name or symbol, for example, are or b.

  

 

  

The units of area are defined as follows.

  

An are is defined as 100 square meters.

  

The hectare and centare are alternate spellings of the hectoare and centiare, respectively.

  

A barn is defined as 1.10-28 square meter. This allows physicists the phrase as big as a barn.

  

A shed is defined as 1.10-52 square meter. The origin of this unit is the same as that of the barn.

  

A circular mil is defined as the area of a circle with a diameter of 1 standard mil, that is, 7.85398163510-7 inch squared.

• 

Each of the following units can be based on the standard or US survey mile.

  

A rood is defined as 14 acre.

  

An acre is defined as 10 square Gunter chains.

  

A lot is defined as 110 square mile.

  

A section is defined as 1 square mile.

  

A township is defined as 36 square miles.

  

A planck area is defined as a square planck length.

Examples

convert'm'2,'dimensions','base'=true

length2

(1)

convert4.,'units','kilometers'2,'sections'

1.544408634

(2)

convert4.,'units','kilometers'2,'sectionsUS_survey'

1.544402457

(3)

convert37,'units','barns','nanometers'2

3710000000000

(4)

See Also

convert/dimensions, convert/units, Units, Units/Index, Units/length


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