A write of length 86cm is bent in the from of a rectangle such that it's length is 7cm more than its breadth find the length and breadth of the rectangle so formed
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Answer:
86 cm is the perimeter of the rectangle
2(l+b)=86
breadth = x
length =x+7
2(x+x+7)=86
2(2x+7)=86
2x+7=43
2x=43-7=36
x=36/2=18cm
breadth = 18cm
length = 18+7=25 cm
(checking 2(18+25)=2(43)=86)
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