Question

Who is the first mathematician to have measured the circumference of the earth?

Answer 1

Eratosthenes

Born around 276 B.C. in Cyrene, Libya, Eratosthenes soon became one of the most famous mathematicians of his time. He is best known for making the first recorded measurement of the Earth's circumference, which was also remarkably accurate.

Answer 2

Answer:

Step-by-step explanation:

Eratosthenes

Eratosthenes' Calculation of Earth's Circumference. In Alexandria, a tower cast a shadow on the Summer Solstice. The Sun was NOT directly overhead there. Eratosthenes knew the distance between Alexandria and Syene (which is about 800 km)