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Permanent link to this puzzle: mscroggs.co.uk/puzzles/108

Each side of a square has a circle drawn on it as diameter. The square is also inscribed in a fifth circle as shown.

Find the ratio of the total area of the shaded crescents to the area
of the square.

If you enjoyed this puzzle, check out Sunday Afternoon Maths LX,

puzzles about shape, or a random puzzle.

puzzles about shape, or a random puzzle.