Answer:
Step-by-step explanation:
L= 3W
Perimeter = 2(l+w) = 40
2(3w+w) = 40
2*4w = 40
8w =40
w = 5
l = 3*5 = 15
72:48
as you divide 120 by 5 as 3+2=5 and that equals 24
24x3=72
24x2=48
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