Use the side lengths! C and D have lengths of 3 and heights of 4. 
Also use how far away they are from the axis.
Both C and D are 2 away from each axis on the end point. 
This also goes with A.
However, B does not seem to be congruent in the sense of (coordinates)
It is the same length and height.
        
                    
             
        
        
        
All you do is 2.5 times the number of feet so 2.5x , x is the number of feet
        
             
        
        
        
Answer:
14x + 23
Step-by-step explanation:
The lengths of three sides of a triangle are 5x + 9 feet, 2x + 14 feet, and 7x feet.
The perimeter of a triangle: the sum of all of its sides.
5x + 9 + 2x + 14 + 7x 
14x + 23
It's the expression of the perimeter of the triangle. Once you will be asked to find x, you'll probably be given the exact perimeter of the triangle.
 
        
             
        
        
        
Step-by-step explanation:

 
        
             
        
        
        
32 x4 = 128 ft
128 x 12 = 1536
Final Answer: 1,536 inches
Hope this helps!! :)