question 1 is congruent. 2 is not congruent and 3 is congruent 
 
        
                    
             
        
        
        
You can download this app called photo math and take a pic of it and it tells you the answer
        
             
        
        
        
So we want to use the Pythagorean a^2 + b^2 = c^2
The answer is explained in photo. B
 
        
        
        
The answer is .07 to this question