Question
The figure below is made up of 2 overlapping squares. The area of the shaded part is 40 m2. The length of the bigger square is 7 m. Find the length of the smaller square.
3 m

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The figure below is made up of 2 overlapping squares. The area of the shaded part is 40 m2. The length of the bigger square is 7 m. Find the length of the smaller square.