Pi, Tygrys i Nil: Polish Edition (in Polish) (Pi:DIGITS Book 1) (English Edition)

Pi, Tiger and Nile (Pi, Tygrys i Nil - the title in Polish Edition) – the book is about pi number. I presented history of pi in two ancient civilizations, Babylon and Egypt. They used different concepts of the circle and different approaches to calculate its area. I also present my geometrical invention of series of squarings the circle. The proposed method is very accurate and fast. The book is illustrated.