It's goofy to subtract perimeter and area; they're in different units.  We persist.
The area is  and the perimeter is
 and the perimeter is  . so the difference is
. so the difference is

Answer: choice A
 
        
                    
             
        
        
        
Thank you for the information. What is the question?
        
             
        
        
        
I cant help you on 3 but 1 is edge amd 2 is face.