Perimeter = 100m = P
width = w = 18.5
length = ?
Equation
P = 2w + 2l
Substitution
100 = 2(18.5) + 2l
Solve for l
100 = 37 + 2l
100 - 37 = 2l
63 = 2l
l = 63/2
l = 31.5 m
Length = 31.5 m
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