In the diagram, the circle and the two semicircles have radius 1.
What is the perimeter of the square?
Input note: give your answer as an exact value.
Select one option, then click Submit.
6 + 4\sqrt{2}
2 + 4\sqrt{2} + 2\sqrt{3}
3\sqrt{2} + 4\sqrt{3}
4 + 2\sqrt{2} + 2\sqrt{6}
12
Select an option, then submit.
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Senior Mathematical Challenge 2006 (2006)
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