Question 483840
Area = 13.5 

Length = 13.5 / W

length = 1/5 perimeter

Perimeter = 2(L+W)

13.5/W = 2/5(L+W)

5*13.5/W = 2((13.5/W)+W)
multiply by W
5*13.5 = 2(13.5+w^2)
67.5= 27+2W^2
67.5-27=2W^2
40.5= 2W^2
W^2=40.5/2
W=4.5
L= 13.5/4.5 
L= 3 

CHECK

Perimeter = 2(3+4.5)= 15
1/5 of 15 = 3 the length

Area = 3*4.5=13.5 unit^2

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