Sugar is added to all sorts of foods and drinks to make them taste sweet or to preserve their flavour. And itâs not just found in products youâd expect, such as cakes, biscuits, fizzy drinks and desserts. Youâll also find it in things like baked beans, bread and cereal.
When did Eratosthenes live and die? Eratosthenes was born in Cyrene, Shahhat, Libya in 276 BC and died in Alexandria, Egypt in 194 BC. He was an astronomer, mathematician, and geographer, who eventually beca â¦ me the chief librarian at the Library of Alexandria.
We donât know which unit Eratosthenes used. If he used the Greek measure, his calculation would have been off by about 16 percent. If he used the Egyptian one, his error would have been less than 2 percent off the actual Earthâs circumference of 24,860 miles (40,008 kilometers). A century after Eratosthenes, the Greek astronomer Posidonius of Rhodes (c. 135â51 BCE) calculated the Earthâs circumference.