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# Puzzles

## Two semicircles

The diagram shows two semicircles.
$$CD$$ is a chord of the larger circle and is parallel to $$AB$$. The length of $$CD$$ is 8m. What is the area of the shaded region (in terms of $$\pi$$)?
If you enjoyed this puzzle, check out Sunday Afternoon Maths LI,
puzzles about circles, or a random puzzle.

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