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Patthebug · Answer 1 · 2018-07-13T08:42:14+0000

let it's width be x
then, it's length = 3x

perimeter of a rectangle = 2 (l+b)
96 = 2 (3x+x)
96 = 8x
12 = x

so the widthe of that rectangle = 12cm and it's length = 3 (12) = 36cm.

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