We first add both 19.8 by 19.8 and therefore, that would give us 39.6.
42 - 39.6 = 2.4.
2.4 ÷ 2 = 1.2
1.2 would be the length of each sides.
        
                    
             
        
        
        
Answer:
x = 1 ,  y = 7 
Step-by-step explanation:
 
        
                    
             
        
        
        
1/3,600 [explanation: (24 hours(60 mins))60 seconds)= 86,400 seconds -> 24/86,400 -> (24/86,400)/24 -> 1/3,600{
        
             
        
        
        
one hour 55 min 
you just need to subtract bout to get the answer