Question 303675
Let's length be L and width be w 

L = 5 + w 

Perimeter = 2(L+w) = 54

2(5+w+w) = 54

2( 5 + 2w) = 54 
5 + 2w = 54/2 

2w = 27 - 5 
w = 22/2 
w = 11 m

Therefore, L = 5 + 11 = 16 m

Answer: : Length is 16 m and Width is 11m