A square metre (US spelling: square meter) is by definition the area enclosed by a square with sides each 1 metre long. It is the SI unit of area. American English or U.S. English is the diverse form of the English language used mostly in the United States of America. ... This article explains the meaning of area as a physical quantity. ... In plane geometry, a square is a polygon with four equal sides and equal angles. ... The metre (American spelling: meter), symbol: m, is the basic unit of distance (or of length, in the parlance of the physical sciences) in the International System of Units. ... The International System of Units (abbreviated SI from the French phrase, Système International dUnités) is the most widely used system of units. ... This article explains the meaning of area as a physical quantity. ...

A square metre is equal to:

• 0.000001 square kilometre
• 10000 square centimetres
• 0.0001 hectares
• 0.01 ares
• 1.196 square yards
• 10.76 square feet
• 1550 square inches

Square kilometre (US spelling: Square kilometer), symbol km², is an SI unit of surface area. ... cm redirects here, alternate uses: cm (disambiguation) A centimetre (symbol cm; American spelling: centimeter) is an SI unit of length. ... A hectare (symbol ha) is a metric unit of surface area, equal to 100 ares (the name is a contraction of the SI prefix hecto + are). ... For the municipality in Sweden, see Åre; for the boroughtown and rural municipality in Estonia see Are An are or (symbol a) is a unit of surface area, equivalent to 100 square metres. ... This article is about the unit of measure known as the yard. ... A square foot is by definition the area enclosed by a square with sides each 1 foot (unit of length) long. ... A square inch is by definition the area enclosed by a square with sides each 1 inch long. ...

Square kilometre

1 km² is equal to:

• the area of a square measuring 1 kilometre on each side
• 1 000 000 m²
• 100 hectares
• 0.386 102 square miles (statute)
• 247.105 381 acres

Conversely: In plane geometry, a square is a polygon with four equal sides and equal angles. ... A kilometre (American spelling: kilometer, symbol: km) is a unit of length equal to 1000 metres (from the Greek words khilia = thousand and metro = count/measure). ... A hectare (symbol ha) is a metric unit of surface area, equal to 100 ares (the name is a contraction of the SI prefix hecto + are). ... This article is about the unit of measure. ... An acre is a measure of land area in Imperial units or U.S. customary units. ...

• 1 m² = 0.000 001 km²
• 1 hectare = 0.01 km²
• 1 square mile = 2.589 988 km²
• 1 acre = 0.004 047 km²

Note: "km²" means square kilometre and not kilo–square metre. For example, 3 km² is equal to 3 000 000 m² and not to 3000 m². This article is about the unit of measure. ...

Square megametre

Square megametres are not widely used; however, there are a number of "megametre fans" who think that this unit is very convenient for measuring oceans and continents. Ocean (from Okeanos, a Greek god of sea and water; Greek ωκεανός) covers almost three quarters (71%) of the surface of the Earth. ... Dymaxion map by Buckminster Fuller shows land mass with minimal distortion as only one continuous continent A continent (Latin continere, to hold together) is a large continuous land mass. ...

1 Mm² is equal to:

• the area of a square measuring 1 megametre on each side
• 1 000 000 000 000 m²
• 100 000 000 hectares
• 1 000 000 km²
• 1 Mm² is the area of Egypt
• The area of Africa is 30.2 Mm²
• The total area of the Moon's surface is 38 Mm²
• The total area of dry land on Earth is 149.8 Mm²
• The area of the Pacific Ocean is 179.7 Mm²
• The total area of the Earth's surface is 510 Mm²

A square as a geometric shape is described and illustrated at square (geometry). ... A megametre (American spelling: megameter) (symbol: Mm) is a unit of length equal to 106 metres (from the Greek words megas = big and metro = count/measure). ... A hectare (symbol ha) is a metric unit of surface area, equal to 100 ares (the name is a contraction of the SI prefix hecto + are). ... Africa is the worlds second-largest continent in both area and population, after Asia. ... Crust composition Oxygen 43% Silicon 21% Aluminium 10% Calcium 9% Iron 9% Magnesium 5% Titanium 2% Nickel 0. ... Earth, also known as the Earth or Terra, is the third planet outward from the Sun. ... Earth, also known as the Earth or Terra, is the third planet outward from the Sun. ...

See also

• SI
• SI prefix
• metre
• 1 E0 m²
• Conversion of units
• orders of magnitude