Question

The Circumference of earth was determined by:​

Answer 1

Answer:

Eratosthenes

Explanation:

Eratosthenes then measured the angle of a shadow cast by a stick at noon on the summer solstice in Alexandria, and found it made an angle of about 7.2 degrees, or about 1/50 of a complete circle. He realized that if he knew the distance from Alexandria to Syene, he could easily calculate the circumference of Earth.

Answer 2

Answer:

The Circumference of earth was determined by Eratosthenes.