Answer:
w = 9
l = 36
Step-by-step explanation:
P = 90
l = 4w
P=2(l+w)
90 = 2(4w+w)
90 = 10w
90 = 2(l+9)
90 = 2l + 18
72 = 2l
254.34 in^2
Replace de values on the formula