Answer:
19
Step-by-step explanation:
I put it in my calculator
 
        
                    
             
        
        
        
$45.99 x 5=$229.95
$229.95 x 20% =$45.99
        
             
        
        
        
Answer:
8
Step-by-step explanation:
2 * 8 = 16
 
        
             
        
        
        
19.4 divided by 2, to find the radius. Then square it, and then multiply it by pi. Which gives you A as the answer