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UKMT Pink Kangaroo, 2016

Geometry Difficulty 2.0 Junior Find the answer United Kingdom

The large triangle shown has sides of length 5 units. What percentage of the area of the triangle is shaded?

(A) $80\%$ (B) $85\%$ (C) $88\%$ (D) $90\%$ (E) impossible to determine

Figure for this problem

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