2006-07-03 06:07:54 · 8 answers · asked by cait 1 in Science & Mathematics ➔ Earth Sciences & Geology
The metric system is somewhat based on the circumference of the earth (at least historically). The distance from the pole (north or south) to the equator is defined as 10,000 kilometers. So, four times 10,000 = 40,000 kilometers.
2006-07-03 09:43:58 · answer #1 · answered by stonerockdude 1 · 1⤊ 0⤋
The average radius of the Earth is 3,959 miles (6,374 kilometers).
The equitorial diameter of the Earth (distance from one side of the Earth to the other at the equator) is about 7,926 miles.
The ratio of the circumference to the diameter of a circle (circumference/diameter)
is written as the symbol pi.
Pi is approximately 3.141592.
3.14159265
3.1415926535
Therefore, to determine the circumference from the diameter given above:
equitorial diameter x 3.141592 = equitorial circumference
| |
7,926 x 3.141592 = 24,900
| |
The earth has a circumference of approximately 24,900 miles.
More precisely the circumference of the earth
at the equator is 24,902 mi / 40,076 km.
2006-07-03 06:30:01 · answer #2 · answered by fzaa3's lover 4 · 0⤊ 0⤋
The average radius of the Earth is 3,959 miles (6,374 kilometers).
The equitorial diameter of the Earth (distance from one side of the Earth to the other at the equator) is about 7,926 miles.
The ratio of the circumference to the diameter of a circle (circumference/diameter)
is written as the symbol pi.
Pi is approximately 3.141592.
3.14159265
3.1415926535
Therefore, to determine the circumference from the diameter given above:
equitorial diameter x 3.141592 = equitorial circumference
| |
7,926 x 3.141592 = 24,900
| |
The earth has a circumference of approximately 24,900 miles.
More precisely the circumference of the earth
at the equator is 24,902 mi / 40,076 km.
2006-07-03 08:10:30 · answer #3 · answered by Taz4me6 2 · 0⤊ 0⤋
It depends on whether you are talking about the circumference at the equator, or the circumference through the poles. The later is shorter, but not by too much. Roughly, it's 40000 km.
2006-07-03 06:14:38 · answer #4 · answered by Ѕємι~Мαđ ŠçїєŋŧιѕТ 6 · 0⤊ 0⤋
The radius of earth is aproximately about 6500 km.
So considering Earth as a sphere the circumference of the Earth is about 2x3.14xR where R=Radius of teh Earth.
It comes out to be 40820 km.
2006-07-03 06:16:28 · answer #5 · answered by Somsurya 2 · 0⤊ 0⤋
Roughly 25,000 statute miles. By the original definition, 40,000 kilometers (measured along any meridian). Also by definition, 21,600 nautical miles. Satellite measurements give the following values for the earth's radius:
- For the semi-major axis (center to any point on the equator), 6,378,137.000 meters.
- For the semi-minor axis (center to either pole), 6,356,752.314 meters.
Using these numbers, the surface distance from pole to equator is approximately 10,001,972.8 meters.
-- Robert A. Saunders, Lake Stevens, WA.
2006-07-03 06:19:55 · answer #6 · answered by Anonymous · 0⤊ 0⤋
The earth is not a perfect sphere (it is slightly flattened at the poles) so its diameter depends on where you do your measurement. If you do it around the equator it is about 25,000 miles.
2006-07-03 06:16:51 · answer #7 · answered by Pavi 2 · 0⤊ 0⤋
It's about 2.pi.R where r is the radius of the earth and gthat is about 6400km.. Do the rest of the math yourself..
2006-07-03 06:14:05 · answer #8 · answered by BDX 1 · 0⤊ 0⤋
it is the distance around the equator usually, about 24,000 miles or so.
2006-07-03 06:11:48 · answer #9 · answered by Anonymous · 0⤊ 0⤋
almost 25,000 thousand miles why you thinking about going on a run?
2006-07-03 06:11:53 · answer #10 · answered by mike67333 6 · 0⤊ 0⤋