# How do you use Heron's formula to find the area of a triangle with sides of lengths #7 #, #4 #, and #9 #?

##### 2 Answers

#### Explanation:

Heron's formula for finding area of the triangle is given by

Where

and

Here let

#### Explanation:

Use Heron's formula:

Heron's formula:

Where,

So,

Substitute the values

We can further simplify that,