4341234345665235657674376.82345348578457 miles
6000000000
3 light years
742,849,260 miles
From Earth to Saturn its approximately 170,000,000 miles away.
200,000,500,000 Miles
1.6 million miles
All the way round and coming back to the same place is 25,000 miles.
25 thousand
Round about 36 million miles (at the closest. Up to 222 million at the farthest.)
Round trip should be 100 miles.
3 light years
About 24, 480 miles.
You could circle the earth at the equator 261 times, approximately.
there are a lot of miles.
Back Round Has 2 Syllables back-round
You need to remember that the earth is not a perfect sphere, so it depends where you measure it from (at the equator it's about 24,900 miles). Round that to 25,000 miles. (1,000,000,000 mi ) / (25,000 mi ) = (1,000,000 / 25 ) = 40,000 times.
780 miles
Hard answer as the question could be read as when did people know that the earth is round, or how do people know that the earth is round. Historically, many people have been credited with the theory of spherical earth, dating back to ancient Greece. Many philosophers of Ancient Greece spoke of earth being round, but most often the credit is given to Pythagoras. The explanation that the world wasn't flat was by observing changes in altitude and the placement of the stars in different locations as they moved around the pole.