Three congruent isosceles trapeziums are assembled to form an equilateral triangle with a hole in the middle, as shown in the diagram.
What is the perimeter of the hole?
Select one option, then click Submit.
3a + 6b
3b - 6a
6b - 3a
6a + 3b
6a - 3b
Select an option, then submit.
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Junior Kangaroo 2017 (2017)
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