Answer :


ABCD is a rectangle


Let the side is x


Length of rectangle = 3x


Breadth of the rectangle = 2x


Given perimeter of rectangle = 20 cm


Perimeter of the rectangle = 2(length + breadth)


20 = 2(3x + 2x)


10x = 20


x = 2


Therefore Length of the rectangle = 3×2 = 6cm


Therefore breadth of the rectangle = 2×2 = 4cm


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