Question
The figure is made up of four small squares. Jade had painted part of one square white and the rest of the figure grey. The perimeter of the white part is 42 cm and the perimeter of the grey part is 82 cm. Find the area of one small square.
4 m

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The figure is made up of four small squares. Jade had painted part of one square white and the rest of the figure grey. The perimeter of the white part is 42 cm and the perimeter of the grey part is 82 cm. Find the area of one small square.