What Is The Circumference Of Earth

The distance from Earth to the sun called an astronomical unit is 92955807 miles 149597870 kilometers according to the. Measured around the Equator it is 40075017 km 24901461 mi.

Eratosthenes Measurement Of The Circumference Of The Earth As Viewed Download Scientific Diagram

The Earth is almost but not quite a perfect sphere.

What is the circumference of earth. It is like the perimeter of other shapes like squares. And if you measure it from the north pole to the south pole it is 40007 km which is approximately 24806 miles. He estimated the circumference of the Earth with the following method.

The diameter of a circle is twice the radius giving us a diameter for Earth of 12756 km. Eratosthenes was the head librarian in Alexandria Egypt the center of learning in the ancient world. However the Earth is not quite a perfect circle and if you measure through the poles the circumference is a bit shorter2485982 miles.

For shapes made of straight edges this line is called the perimeter but for circles this defining line is called the circumference. Taking the Earth as spherical the Earths circumference would be fifty times the distance between Alexandria and Syene that is 250000 stadia. However the Earths circumference is different depending on how you measure it.

The Earth circumference around the equator is 40075 km which is around 24887 miles. Due to the irregular ellipsoid shape of the Earth a line of longitude wrapped around the Earth going through the north and south poles is 2485982 miles 40000 kilometers. Circumference of the Earth The circumference of the Earth in kilometers is 40075 km and the circumference of the Earth in miles is 24901.

Measurement of Earths circumference has been important to navigation since ancient times. Well the difference in angle between these two cities is equal to 712 which is 5056 times less than a full circle. What Is The Circumference Of The Earth.

The first known scientific measurement and calculation was done by Eratosthenes who achieved a great degree. What is the General Formula For the Circumference of a Sphere. Eratosthenes some 2200 years ago was off by only 125 km or 101 mi.

The earth as we said is an oblate spheroid so geodesists scientists who measure the earth and its position in space have measured and calculated the average of earths circumference as 40075 km or 24901 mi. Both of these values are very close to the accepted modern values for the Earths circumference and radius 40070 km and 6378 km respectively which have since been measured by orbiting spacecraft. Thats sounded nice and simple but the question is actually more complicated than that.

He knew that on the summer solstice the longest day of the year the angle of the sun above Syene Egypt would be 0 in other words the sun would be directly overhead. Earths polar radius is 3950 miles 6356 km a difference of 13 miles 22 km. Pi 314159 2x 314159x 149597870939950334 kilometers.

Earth is the third planet from the Sun and the only astronomical object known to harbor lifeAbout 29 of Earths surface is land consisting of continents and islandsThe remaining 71 is covered with water mostly by oceans but also by lakes rivers and other fresh water which together constitute the hydrosphereMuch of Earths polar regions are covered in ice. The circumference of the Earth is 40075 km and the Greek geographer Erastosthenes was the first person to estimate the Earths circumference nearly accurately. Using those measurements the equatorial circumference of Earth is about 24901 miles 40075 km.

Eratosthenes thought the following way. Taking average distance from Sun to earth as 149597870 kilometers as radius circumference is 2 x Pi x 149597870 kilometers. You can think of it as the line that defines the shape.

In other words if you could drive your car around the. This means that instead of being of equal circumference in all areas the poles are squished resulting in a bulge at the equator and thus a larger circumference and diameter there. Since 1 Egyptian stadium is equal to 1575 metres the result is 39375 km which is 14 less than the real number 40076 km.

Earths circumference is the distance around EarthMeasured around the poles the circumference is 40007863 km 24859734 mi. The circumference of a circle is the distance around the outside of the circle. Thus if one measures the distance.

So Earths orbit is the circumference of a circle. The Earths circumference the distance around the equator is 40075 kilometers around. Earths circumference and diameter differ because its shape is classified as an oblate spheroid or ellipsoid instead of a true sphere.

Circumference Measured at the equator the circumference of the Earth is 2490155 miles. The circumference of the Earth at the equator is 2490155 miles 4006659 kilometers.

What Is The Circumference Of The Earth In Km Socratic