Answer :
The inequality expresses all the possible lengths, in centimeters, of the rectangle is given as l >18
Perimeter of a triangle
The formula for calculating the perimeter of a triangle is expressed as:
P = 2(l + w)
l is the length
w is the width
Given the following
l = 3w
w = l/3
If the perimeter of the rectangle is greater than 48 centimeters, then;
2(l + w) > 48
2(3w+w) > 48
2(4w) > 48
8w > 48
w > 6
l/3 > 6
l > 18
Hence the inequality expresses all the possible lengths, in centimeters, of the rectangle is given as l >18
Learn more on inequality here: https://brainly.com/question/11613554
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