Respuesta :

The answer would be the top answer in the left corner. (The side length*4) because a square has four sides, and the perimeter is adding up ALL sides, so it would be adding up four total sides.
OK....
I believe the answer you would be looking for would explain what the perimeter would be.
The perimeter is the side lengths times 4 
That would be 19/2
So your answer would be 
Answer A 
or 
Perimeter times 4

H0P3 It H3LPS :)