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UKMT Junior Kangaroo, 2015

Geometry Difficulty 2.0 Junior Find the answer United Kingdom

In the diagram, the small equilateral triangles have area $4\text{ cm}^2$ . What is the area of the shaded region?

(A) $80\text{ cm}^2$ (B) $90\text{ cm}^2$ (C) $100\text{ cm}^2$ (D) $110\text{ cm}^2$ (E) $120\text{ cm}^2$

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