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Rai (area)

 

 
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Rai (area)
 
 
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A rai (Thai
Thai language

Thai , is the national language and official language language of Thailand and the mother tongue of the Thai people, Thailand's dominant ethnic group....
 ???) is a unit of area
Area

Area is a quantity expressing the two-dimensional size of a defined part of a surface, typically a region bounded by a closed curve. The term surface area refers to the total area of the exposed surface of a 3-dimensional solid, such as the sum of the areas of the exposed sides of a polyhedron....
, equal to 1,600 square metre
Square metre

The square metre is the SI derived unit of area, with symbol m?. It is defined as the area of a square whose sides measure exactly one metre....
s (40 m × 40 m), used for measuring land area. Its current size is precisely derived from the metre
Metre

The metre or meter is a Unit of measurement of length. It is the SI base unit of length in the metric system and in the International System of Units , used around the world for general and scientific purposes....
, but is neither part of nor recognized by the modern metric system
Metric system

The metric system is an international decimalised systems of measurement, founded by France in 1791, that is the common system of Unit of measurement used by most of the world....
, the International System
Si

Si, si, or SI may refer to :...
 (SI).

The rai equals 4 ngaan
Ngaan

A ngaan is a unit of area, equal to 400 square metres , used for measuring land or property area. Its current size is precisely derived from the metre, but is neither part of nor recognized by the modern metric system, the SI ....
 or 400 tarangwa
Tarangwa

A tarangwa or square waa 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 waa , equivalent to four square metres....
 aka square waa
Waa

A waa is a unit of length, equal to 2 metres . Its current size is precisely derived from the metre, but is neither part of nor recognized by the modern metric system, the SI ....
.

It is commonly used in Thailand
Thailand

The Kingdom of Thailand is an independent country that lies in the heart of Southeast Asia. It is bordered to the north by Laos and Myanmar, to the east by Laos and Cambodia, to the south by the Gulf of Thailand and Malaysia, and to the west by the Andaman Sea and Myanmar....
 and equals 16 are
Are

Are is a unit of area, equal to 100 square metres , used for measuring land area. It was defined by older forms of the metric system, but is now outside of the modern SI ....
, another unit based on the metre and as commonly used in several countries recognized though not encouraged by the SI.








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A rai (Thai
Thai language

Thai , is the national language and official language language of Thailand and the mother tongue of the Thai people, Thailand's dominant ethnic group....
 ???) is a unit of area
Area

Area is a quantity expressing the two-dimensional size of a defined part of a surface, typically a region bounded by a closed curve. The term surface area refers to the total area of the exposed surface of a 3-dimensional solid, such as the sum of the areas of the exposed sides of a polyhedron....
, equal to 1,600 square metre
Square metre

The square metre is the SI derived unit of area, with symbol m?. It is defined as the area of a square whose sides measure exactly one metre....
s (40 m × 40 m), used for measuring land area. Its current size is precisely derived from the metre
Metre

The metre or meter is a Unit of measurement of length. It is the SI base unit of length in the metric system and in the International System of Units , used around the world for general and scientific purposes....
, but is neither part of nor recognized by the modern metric system
Metric system

The metric system is an international decimalised systems of measurement, founded by France in 1791, that is the common system of Unit of measurement used by most of the world....
, the International System
Si

Si, si, or SI may refer to :...
 (SI).

The rai equals 4 ngaan
Ngaan

A ngaan is a unit of area, equal to 400 square metres , used for measuring land or property area. Its current size is precisely derived from the metre, but is neither part of nor recognized by the modern metric system, the SI ....
 or 400 tarangwa
Tarangwa

A tarangwa or square waa 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 waa , equivalent to four square metres....
 aka square waa
Waa

A waa is a unit of length, equal to 2 metres . Its current size is precisely derived from the metre, but is neither part of nor recognized by the modern metric system, the SI ....
.

It is commonly used in Thailand
Thailand

The Kingdom of Thailand is an independent country that lies in the heart of Southeast Asia. It is bordered to the north by Laos and Myanmar, to the east by Laos and Cambodia, to the south by the Gulf of Thailand and Malaysia, and to the west by the Andaman Sea and Myanmar....
 and equals 16 are
Are

Are is a unit of area, equal to 100 square metres , used for measuring land area. It was defined by older forms of the metric system, but is now outside of the modern SI ....
, another unit based on the metre and as commonly used in several countries recognized though not encouraged by the SI.

See also

  • 1 E+3 m² for a comparison with other areas