Question 4792
When looking for a perimeter we are actually looking for a distance, so we can use the look at this problem in parts.

The distance between each point can be found by using the formula:

{{{d=sqrt((X-x1)^2+(Y-y1)^2)}}}

distance1= {{{d=sqrt((-5-7)^2+(-3-2)^2)}}}=13
distance2 ={{{d=sqrt((-5-4)^2+(-3-6)^2)}}}=12.7279
distance3={{{d=sqrt((7-4)^2+(2-6)^2)}}}=5

the perimeter = 13+12.7279+5 = 30.7279