# How do you find the area of a triangle with 3 sides given?

##### 1 Answer

#### Answer

#### Answer:

#### Explanation

#### Explanation:

Has some way to find the area of triangle with 3 sides given .

1) Assume that we are given a, b, c like in picture and we want to find the area.

We can use this formula .

Thus

(This is also called the Heroni formula )

Example :

Find the area of triangle with a= 4 , b= 5 ,c=3 .

Use the half perimeter formula :

Than the formula for area :

(We know that this is a right angle triangle based of information given By pithagora we can apply the formula

9+16 =25.

For this case we can aplly the formula of area

But this a case only for right angle while the Herony formula is for all triangles

)

Describe your changes (optional) 200