# A triangle has sides with lengths: 14, 9, and 12. How do you find the area of the triangle using Heron's formula?

##### 1 Answer

Jan 7, 2016

The area of the triangle is 53.5 square units.

#### Explanation:

Heron's formula is

The formula for the semiperimeter is

Let side

Calculate the semiperimeter.

Calculate the area of the triangle.

Source: https://www.mathsisfun.com/geometry/herons-formula.html