# In a right- angled triangle, the shortest sides are 5 and 12. How do you find the perimeter of the triangle?

##### 1 Answer

May 23, 2018

#### Answer:

**The perimeter of the triangle is 30 units.**

#### Explanation:

You have to use the **"Pythagorean theorem "** in order to find the greatest side / Hypotenuse of the triangle .

Pythagorean theorem states that - " **The sum of the squares of the smaller sides of a right angled triangle is equal to the square of the greatest side / hypotenuse of right angled triangle ".**

Let the third side be 'x'

So ,

The greatest side / hypotenuse of the triangle = 13

The perimeter of a triangle = Sum of all sides