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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