Lengt of rectangle is 18cm more than breadth if perimeter is 84 find area
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Breadth=x ,Length=18+x(as per the question),perimetre=84
Perimetre=2(l+b)
84=2(18+x+x)
84=2(18+2x)
84=36+4x
4x=84-36=48
4x=48
x=48/4=12
L=12+18=30
B=12
So area of rectangle=L*B
30*12=360cm^2
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