Sentences with phrase «circumfrence of»
circumfrence of earth = 40,000 Km (initially by definition) radius = 40,000 / 2 pi Surface area = 4 pi R ^ 2 = 4 x 20,000 x 20,000 / pi = ~ 5 × 10 ^ 8 sq Km.
https://climateaudit.org/ Not exact matches
Round earth has been human knowledge since atleast that egyptian guy used in geometry courses to prove that if you know angle of sun and a well you can prove circumfrence and apparently the guy did so rather accurately.