Question

Heyaa !!!
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:-) :-) HAPPPY SCIENCE DAY TO ALL OF U ND SPECIALLY TO ALL SCIENTISTS :-) :-)

NOW ANSWER THIS :-

Who was the first person to calculate the circumference of the Earth correctly ? And how much was it ?
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:-) :-) Thnx :-) :-)
:-) :-) Be happy :-) :-) ​

Answer 1

Eratosthenes was the first person to calculate the circumference of the Earth and it was 40,075km