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Answer this a piece of poster has a perimeter of 130 cm what are the dimensions of the poster if its length is 35 cm longer than its width?
Wiki User
∙ 13y ago
Suppose the width is W cm
Then the length, L = W + 35 cm
And the perimeter is 2W + 2L = 2W + 2(W+35) = 4W + 70
4W + 70 = 130 so that 4W = 60 or W = 15
and then L = W + 35 = 50
So the poster is 15 cm by 50 cm
Wiki User
∙ 13y ago
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