I think it’s none of those. 
Radius is a line that reaches the middle of the circle, so like
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CA
        
             
        
        
        
It is a square, so you know the sides are equal. You also know that 49 is a squared number. so you do 49 square rooted and you get 7. the perimeter is adding all the side lengths. So you take 7 and multiply it by 4 since a square has 4 sides. and u have your perimeter. 28!<span />
        
             
        
        
        
Answer:
250=70x+50
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
A
Step-by-step explanation:
The zero is the value of x where the line crosses the x- axis
The line crosses the x- axis at x = - 5 ← zero
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
3 2/5