Given the polygon of the vertices :
[tex]\begin{gathered} U=(-2,4) \\ V=(3,4) \\ W=(3,-4) \end{gathered}[/tex]The graph of the points and the polygon is as shown in the following graph :
Using the graph to find the distance between the points :
So, UV = 5
And VW = 8
The distance between the points U and W will be calculated using Pythagorean :
[tex]UW=\sqrt[]{5^2+8^2}=\sqrt[]{25+64}=\sqrt[]{89}\approx9.43[/tex]
So, the perimeter of the polygon =
[tex]UV+VW+UW=5+8+9.43=22.43[/tex]So, the answer is : 22.43 ( to the nearest hundredth )
So, The perimeter is about 22.43 units.