Answer :

ABCD is a rectangle

Let the side is x

Length of rectangle = 5x

Breadth of the rectangle = 4x

Given perimeter of rectangle = 90 cm

Perimeter of the rectangle = 2(length + breadth)

90 = 2(5x + 4x)

18x = 90

x = 5

Therefore Length of the rectangle = 5×5 = 25cm

Therefore breadth of the rectangle = 4×5 = 20cm

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