see the attached figure to better understand the problem
we know that the distance between two points is equal to
Let
Step 1
<u>Find the distance AB</u>
substitute in the formula
Step 2
<u>Find the distance BC</u>
substitute in the formula
Step 3
<u>Find the distance AC</u>
substitute in the formula
Step 4
<u>Find the perimeter of the triangle</u>
we know that
the perimeter of the triangle is the sum of the length sides of the triangle
substitute the values
therefore
<u>the answer is</u>
the perimeter of the triangle is