A square shaped copper wire each side of which measures 18 cms, can be bent to form a rectangle.The length and breadth of the rectangle is in the respective ratio of 7 : 5. How much will the breadth of therectangle measure
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Perimeter= 4*Side of square
P=4*18=72
Since both shapes are formed by same wire
Perimeter of Square= Perimeter of Rectangle
Let lenght be 7x and breadth be 5x
72=2(7x+5x)
x=3
lenght=7x=21 cm
breadth=5x=15 cm
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