What is the circumference of the earth in kilometers?
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game masta
ANSWERS: 8
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First, let's calculate the distance around the earth at the equator. The distance around a circle is also called the circumference. The circumference is given by 2 times pi times the radius, where pi is 3.14. The radius of the earth at the equator is about 6378 kilometers so the distance around the earth at the equator is 2 time 3.14 times 6378 which equals 40,074 kilometers. Now imagine if we were to slice through the earth at 23.5 degrees north. This slice would be a circle whose circumference we wish to calculate. The radius of this circle will be smaller than the radius at the equator. How much smaller? The radius at 23.5 degrees north will be the radius at the equator times the cosine of the latitude. So the radius at 23.5 degrees north is 6378 times cosine(23.5) which is 5849 kilometers. The distance around the earth at 23.5 degrees north is then 2 times 3.14 times 5849 which is 36,750 kilometers. Hope you followed that- it's a little hard to explain without being able to draw a picture. grant l
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The simple answer is 40,000Km. Historically, the metre was defined by the French Academy of Sciences as 1/10,000,000 of the distance from the equator to the north pole through Paris. So for a quarter the way around the world it is 10,000Km, making 40,000Km for all the way around. The earth however is not a perfect sphere. so the distance around the equator is slightly different from going around the earth via the poles. The difference is very small though.
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Mean radius: 6,372.797 km Equatorial radius: 6,378.137 km Polar radius: 6,356.752 km Aspect Ratio: 0.996 647 1 Equatorial circumference: 40,075.02 km Meridional circumference: 40,007.86 km Mean circumference: 40,041.47 km Surface area: 510,065,600 km² Land area: 148,939,100 km² (29.2 %) Water area: 361,126,400 km² (70.8 %) Volume: 1.083 207 3×1012 km³ Mass: 5.9742×1024 kg Mean density: 5,515.3 kg/m³ Equatorial surface gravity: 9.780 1 m/s² (0.997 32 g) Escape velocity: 11.186 km/s (≅39,600 km/h) Sidereal rotation period: 0.997 258 d (23.934 h) Rotation velocity at equator: 465.11 m/s Axial tilt: 23.439 281° Right ascension of North pole: 0° (0 h 0 min 0 s) Declination: +90° Albedo: 0.367 Surface temp.: Kelvin Celsius min mean max 185 k 287 k 331 k -88.3 °C 14 °C 57.7 °C Adjectives: Terrestrial, Terran, Telluric, Tellurian, Earthly, Earthling (lifeforms)
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24,901.55 miles around the equator And....24,859.82 miles going around the poles
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Technically, it is just under 25,000 miles.
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From.... http://geography.about.com/library/faq/blqzcircumference.htm The circumference of the earth at the equator is 24,901.55 miles (40,075.16 kilometers). But, if you measure the earth through the poles the circumference is a bit shorter - 24,859.82 miles (40,008 km). This the earth is a tad wider than it is tall, giving it a slight bulge at the equator. This shape is known as an ellipsoid or more properly, geoid (earth-like)
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if i did my math correct, or looked up the right number it should be about 25,000 miles or 24,901.463 miles circumference
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Just go for geometrical calculations. the diameter of earth is 12800km. according to geometry. the circumference of a sphere =pie(D) where pie =3.142 D= diameter of the sphere. so the circumpherence of the earth id 3.142(12800)kms=40217.6 kms=25104.61 miles.but the figure is a rough estimate which gives an approximete value of earths circumference. As the earth is not completely spherical. Hence figures may marginally vary.
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