Answer:
l = 81
w = 27
Explanation:
l = 3x (x2)
w = x (x2)
l = 6x (has two sides so we x2)
w = 2x
6x + 2x = 8x
8x = 216
x = 27 (divide both sides)
l = 27 x 3 = 81 (length is 3x bigger than width)
81 + 81 + 27 + 27 = 216
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