Answer :

DWRead

Answer:

Step-by-step explanation:

height = ¼x+5

perimeter = 2(length)+2(height)

3½x + 18 = 2(length) + 2(¼x + 5)

3½x + 18 = 2(length) + ½x + 10

3x + 8 = 2(length)

length = 1½x + 4

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