Answer:
80 yd^2
Step-by-step explanation:
Since the formula for squares is s^2, we can use this to set up an equation, which is
s^2=400
If we square root this, we get
s=20
The perimeter formula for a square is 4s, so if we plug in, we end up with 80 yd^2
 
        
             
        
        
        
-2. or otherwise put as -2/1
        
                    
             
        
        
        
Answer:
90/91
Step-by-step explanation:
as in the attachment 
 
        
             
        
        
        
I can’t help with out a problem to solve