House of the rising sun

A semicircle, a circle, a square and an equilateral triangle. The two points are the tangency point and the semicircle centre. What fraction of the total area is yellow?

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The semicircle radius is three times the circle radius and the yellow fraction is approximately 21,3%.

Solution by Kamran Zamani.


House of the rising sun
When the sun rises through the windows
This sun coming daily
And blinding our eyes
With it’s smile
And bright light
This sun is warming us
Happiness for soul and mind
We breathe and live again
A real pleasure with sunrays
And that fire in the sky


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One reply on “House of the rising sun”

If I’d known that my solution was going to be shared on this amazing website, I’d have made more of an effort to make it tidier…
Thank you Sir for your appreciation.
Your inspiring puzzles are certainly loved by thousands. πŸ™πŸ‘πŸ˜Š

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