Geometrical Puzzle 3
Keep in shape with a geometric conundrum.

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Circular thinking
Look at that square, lording it over the circles clustered around it. Size-wise, one of those circles could just about fit inside the square, touching all four of the walls. But how many circles would it take to completely cover the square?
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Circular thinking
Only four circles would be required. It's definitely improved your life knowing that, right?