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Question Number 211143 by boblosh last updated on 29/Aug/24
Answered by A5T last updated on 29/Aug/24
Letwidthbew⇒w=y+12perimeter=2(w+y)2(w+30+y+30)=3×2(w+y)⇒w+y=30⇒y+12+y=30⇒y=9⇒length=9andwidth=21
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