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Australian AMC 2009 - Upper Primary Question 26

AMC AUSTRALIA · Australian AMC 2009 - Upper Primary

Question 26

The star shown is made up of two different-sized equilateral triangles which overlap symmetrically.

If the lighter-shaded smaller triangles each have an area of 1 square unit and the darker, larger triangles each have an area of 16 square units, what is the total area, in square units, of the whole star?

Question illustration