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UKMT Pink Kangaroo, 2022

Geometry Difficulty 2.0 Junior Find the answer United Kingdom

Five squares and two right-angled triangles are positioned as shown. The areas of three squares are $3$ m $^2$ , $7$ m $^2$ and $22$ m $^2$ as shown. What is the area, in m $^2$ , of the square with the question mark?

(A) $18$ (B) $19$ (C) $20$ (D) $21$ (E) $22$

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