Answer:
51ft, 17ft, 39ft
Step-by-step explanation:
longest = x
2nd = [tex]\frac{1}{3}[/tex]x
3rd = x - 12
P = 107
a + b + c = Perimeter
x + [tex]\frac{1}{3}[/tex]x + x - 12 = 107
[tex]\frac{7}{3}[/tex]x -12 = 107
[tex]\frac{7}{3}[/tex]x = 119
x = 51
[tex]\frac{1}{3}[/tex]x = 17
x - 12 = 39
