The planet s rotation causes it to bulge at the equator. Measured at the equator the circumference of the earth is 24 901 55 miles.

Curvature For The Length Of 118 Miles Should Be 1 76 Miles For

Around the poles it measures almost exactly 40 000 kilometres or 21 600 nautical miles due to the circumference being used to define those units of measurement.

Circumference of earth in miles. The radius of earth at the equator is 3 963 miles 6 378 kilometers according to nasa s goddard space flight center. At an altitude of 322 km 200 miles an orbiter covers approximately 41 300 km 26 000 miles in one orbit. The earth s diameter at the equator is 7 926 28 miles and its diameter at the poles is 7 899 80 miles.

The point on the surface farthest from earth s center of mass is the summit of the equatorial chimborazo volcano in ecuador 6 384 4 km or 3 967 1 mi. The earth is a bit wider than it is tall giving it a slight bulge at the equator. The circumference distance around the largest part of the earth is roughly 24 898 miles 40 070 kilometers according to nasa.

But measured from pole to pole that is to say along the meridian line the earth has a circumference of 40 007 86 km or 24 859 73 miles. However earth is not quite a sphere. The space shuttle orbiter with a velocity of 27 880 km per hour 17 322 miles per hour takes approximately 90 minutes to orbit or travel just outside the circumference of the earth.

Earth s circumference is the distance around the earth. This shape is known as an ellipsoid or more properly a geoid. In other words if you could drive your car around the equator of the earth yes even over the oceans you d put on an extra 40 075 km on the odometer.

The following figure shows how eratosthenes s earth measurement worked. The average diameter of the reference spheroid is 12 742 kilometres 7 918 mi. Measured at the equator the earth has a circumference of 40 075 017 km or 24 901 461 miles.

So he multiplied 500 by 50 to arrive at his estimate of the earth s circumference. However the earth is not quite a perfect circle and if you measure through the poles the circumference is a bit shorter 24 859 82 miles. This area is also called the equator if you estimate that a day.

The circumference of the earth in kilometers is 40 075 km and the circumference of the earth in miles is 24 901. Radius diameter and circumference. Eratosthenes divided 360 by 7 2 and got 50 which told him that the distance between alexandria and syene 500 miles was 1 50 of the total distance around the earth.