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What!! π＝４／√φ＝3.1446＝Pi＝3,1446... Is this true!? (Third edition)／Umeniuguisu
. 送料無料定価:1320円
Size_ A5, Pages_ 50
This book clarifies the relationship between the circle ratio π and the golden ratio φ from an uncommon view. I wrote it without using difficult mathematical expressions so that many readers can understand it at the middle school level. As I am out of my depth in mathematics, enjoy my thesis on mathematics.
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Pi＝π＝4／√φ＝3,1446
Pi＝π＝4／√φ＝3.1446