Answer:
the answer is A. I believe
 
        
             
        
        
        
The right answer is 
D.)
Hope this helps :)
        
                    
             
        
        
        
Answer:
0.104
Step-by-step explanation:
10.40 · 0.01 = 0.104
 
        
                    
             
        
        
        
2, No solution
3, Infinite many solutions 
4, (0,-3)
i hope i was able to help!! so sorry if i made a mistake
        
             
        
        
        
Answer:
The approximate circumference is 62.8 mm
Step-by-step explanation:
Circumference is basically the perimeter of the circle 
Circumference is given by 

Here the diameter is 20 mm, so the radius will be half of diameter = 10 mm
Substituting the given values, in above equation, we get - 
Circumference =
 mm
mm
The approximate circumference is 62.8 mm