The Planet Earth. What is the SIZE of the Earth?. Can you measure the SIZE of the Earth from your observation point?. 200 BC. ERATOSTHENES Measured the distance around the earth without leaving E gypt.
What is the SIZE of the Earth?
Can you measure the SIZE of the Earth from your observation point?
How did Eratosthenes measure the size of the earth?
500 mi ≈ 800 km
Circumference of the Earth:25000 mi
Find the diameter and radius of the Earth
Circumference ≈ 24 900 mi
≈ 40003.60 km
Diameter ≈ 12 740 km
Radius≈ 6370 km
Note: These are only approximates since the earth is not perfectly round
7 926 mi ≈ 12 756 km
7 900 mi ≈ 12 714 km