What is your question? I think you've got the correct answer.
        
             
        
        
        
Answer:
-6 your welcome.......!.!.!.!.!
 
        
                    
             
        
        
        
There isnt one its has to be consistent but honestly idk
        
             
        
        
        
Step-by-step explanation:
Given,
Perimeter of the rectangle = 200cm
Breadth of the rectangle = 10 cm
Therefore, by the problem 
=> 2(l+b) = 200cm
=> 2(l + 10) = 200cm

=> l + 10 = 100
=> l = 100 - 10
=> l = 90
<u>Hence, required length othe rectangle is 90 cm (Ans)</u>
 
        
             
        
        
        
Since there is a 95% chance that you get two printers right, then you simply square the decimal equivalent which is .95 (Hence, you do .95^2). You will get .9025 (or 90.25%). 
For letter b, you simply subtract .9025 from 1. 
ans = 1-.9025
ans = .0975 (or 9.75%)
So the answer to B) would be there is a 9.75% chance the probability of a shipment can be rejected.