# Definition:Surface Area

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## Definition

**Surface area** is the measure of the total area of the surface of a body.

It has two dimensions and is specified in units of length squared.

Hence the term **square** as a general vague term for a quantity in two dimensions.

It is a scalar quantity.

### Symbol

The usual symbols used to denote the **surface area** of a body are $S$ or $A$.

### Dimension

**Area** is a dimension of measurement of physics.

- $L^2$

### Units

- The SI unit of
**area**is the square metre $\mathrm m^2$. - The CGS unit of
**area**is the square centimetre $\mathrm {cm}^2$.

Thus:

- $1 \ \mathrm m^2 = 10^4 \ \mathrm {cm}^2$

## Also known as

The term **superficial area** can sometimes be found in older texts to mean **surface area**.