# Surface Area

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**See:** Surface, Area, Volume, Square Meter.

## References

- http://en.wikipedia.org/wiki/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. Area is an important Invariant in the Differential Geometry of Surfaces.