A square containing two quarter circles and a common tangent. What is the proportion yellow : black?
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Solution
The proportion yellow : black is 16/169.
Poem
If you fall in the Black Hole
You can not more escape
If the speed of light follows
The so called escape velocity
Cannot escape
The Black Hole Sun is a song too
From an American Rock Band
” Black Hole Sun
Won’t you come
And wash away the rain
Till you all just disappear “
