A square containing two semicircles. The red line segment is a common tangent. What fraction is green?
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Solution
The green fraction is 1/8.
![](https://mirangu.com/wp-content/uploads/2024/05/PushedTogetherSolution.jpg)
Drawing in some parallels and filling in the angles shows green area is that of half a square with side the circle radius, so 1/8 the area of the main square.
Video
Please find here the video solution: Video: Pushed together.