What’s the items number. ? When rounding everything in front of the decimal find the place value it wants you to round then if it’s 5 or below round the the lowest whole number. If it’s behind a decimal you would do the same thing. It’s the number is higher than 5 round it up. 
        
             
        
        
        
According to a calculator, this is the answer: 0.1923076923. Hope this helped?
        
                    
             
        
        
        
28/11.2 = 2.5
since they are similar and openly stated as parrallelograms, you know that they have a scale of the longest edge of EFGH to the longest edge of JKLM
        
             
        
        
        
The slope or distance is 4/-3