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unit of measure: the base unit | the supplementary unit | the derived unit

geometry: the area of a flat figure | the area of a solid | the volume of the solid


unit

Area

Definition

The area is the physical measure, which defines how large is that area. Often the word “surface” is used to mean the surface area.

1 square metre is the area of a square whose sides are 1 metre.

 

system of units:   SI;
statute:   derived unit;
name the value:   A;
unit name:   square metre;
symbol unit:   m²;
relationship of definition:   A = L²;
dimension:   L2;
expression in other units:   in², yd², ft² ;

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Units of measurement

namesymbol value in SI unit:
note
1 hectareha= 104 
1 acrе ≈ 4 046.873 
1 square milemi2≈ 2 589 988(1)
1 square milemi2≈ 2 589 998(2)
1 arеa= 100 
1 square yardyd2≈ 0.836 127 4 
1 square footft2= 0.092 903 04 
1 square incein2= 6.451 6 × 10-4 
1 circular mil≈ 5.067 075 × 10-10 
1 barn b= 1.0 × 10-28 

Note:

(1) - imperial;

(2) - based on U.S. survey foot;