8 Is you're answer! hope that i helped!
        
             
        
        
        
Answer:
Parallel 
Step-by-step explanation:
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17) 11.1 
18) 21.4
19) 30.5
20) 16.5
21) 26.5
        
             
        
        
        
The perimeter is the sum of side lengths. Opposite sides of a rectangle are the same length, so the perimeter is
  P = 11 +43 5/12 +11 +43 5/12
    = 2(11 +43 5/12)
    = 2(54 5/12)
  P = 108 5/6 . . . . feet
The area is the product of length and width. It doesn't matter which of the given dimensions you consider length or width, since you multiply them either way.
  A = 11 * 43 5/12
    = 473 +55/12
  A = 477 7/12 . . . . square feet