# Difference between revisions of "Heron's Formula"

m (Fixed link to Brahmagupta) |
m (Changed semiperimeter to semi-perimeter for consistancy) |
||

Line 7: | Line 7: | ||

<math>K=\sqrt{s(s-a)(s-b)(s-c)}</math> | <math>K=\sqrt{s(s-a)(s-b)(s-c)}</math> | ||

− | where the [[ | + | where the [[semi-perimeter]] <math>s=\frac{a+b+c}{2}</math>. |

=== See Also === | === See Also === | ||

* [[Brahmagupta's formula]] | * [[Brahmagupta's formula]] |

## Revision as of 18:24, 18 June 2006

**Heron's formula** (sometimes called Hero's formula) is a method for finding the area of a triangle given only the three side lengths.

### Definition

For any triangle with side lengths , the area can be found using the following formula:

where the semi-perimeter .