It’s simple, do: 8+8+10+10, just add them you will get 36. The explanation is: Perimeter is add up all the sides, since it is a rectangle it has congruent sides, so they have the same length
        
                    
             
        
        
        
Answer:
$462.7
Step-by-step explanation:
15% commission on $54
= $8.1
he sell 27 boards so
8.1 × 27=$218.7
so
$245.00+$218.7=$463.7
 
        
             
        
        
        
Answer:
10
Step-by-step explanation:
this is easy... subtraction
 
        
             
        
        
        
Let the length of rectangle be L and the width of rectangle be W. 
Since length exceeds the width by 25 inches, length will be 
L = W + 25 
Now the perimeter, P, is given by 
P = 2(L + W) 
Substituting L = W + 25 in the above equation, 
P = 2(W + 25 + W) 
P = 2(2W + 25) 
P = 4W + 50 
But P = 86 inches 
P = 4W + 50 = 86 
4W = 86 - 50 = 36 
W = 36/4 = 9 
Hence, width W = 9 inches. 
Length L = W + 25 = 9 + 25 = 34 inches.