# The length of the small leg of a 30°-60°-90° triangle is 3. What is its perimeter?

##### 1 Answer

Nov 25, 2015

To compute the perimeter of a triangle, you need to know the length of all sides.

Let's call the small leg

We already know that

First, we can compute

Now, we can compute

Now that we have all three sides, we can compute