The perimeter of rectangle is 36cm and its breath is 8.4cm find the length and the area of rectangle
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Let length and breadth be 3x and x.
2(l+b)=36cm
2(3x+x)=36cm
8x=36cm
x=36/8
x=4.5cm
length=3*4.5=13.5cm
breadth=x=4.5cm.
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