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Earth's circumference is the distance around Earth. Measured around the equator, it is 40,075.017 km (24,901.461 mi). Measured passing through the poles, the circumference is 40,007.863 km (24,859.734 mi). [1] Treating the Earth as a sphere, its circumference would be its single most important measurement. [2]
In 2019, 39 million km 2 (15 million sq mi) of Earth's land surface consisted of forest and woodlands, 12 million km 2 (4.6 million sq mi) was shrub and grassland, 40 million km 2 (15 million sq mi) were used for animal feed production and grazing, and 11 million km 2 (4.2 million sq mi) were cultivated as croplands. [271]
List of orders of magnitude for areas 10 27 square metres and larger. Factor (m 2) Multiple Value Item 10 30: 1 square petametre (Pm 2) 10 31: 10 Pm 2: 10 32: 200 Pm 2: Roughly the surface area of an Oort Cloud: 300 Pm 2: Roughly the surface area of a Bok globule: 10 33: 1 000 Pm 2: 10 34: 30 000 Pm 2: Roughly the surface area of The Bubble ...
The kilometre (SI symbol: km) is a unit of length in the metric system equal to 1 000 meters (10 3 m). To help compare different orders of magnitude, this section lists lengths between 1 kilometer and 10 kilometers (10 3 and 10 4 meters).
Dymaxion map of the world with the 30 largest countries and territories by area. This is a list of the world's countries and their dependencies, ranked by total area, including land and water.
1:100,000 maps are divided into squares representing 1 km 2, each square on the map being one square centimetre in area and representing 1 km 2 on the surface of the Earth. For 1:50,000 maps, the grid lines are 2 cm apart. Each square on the map is 2 cm by 2 cm (4 cm 2) and represents 1 km 2 on the surface of the Earth.
In 1791 the commission originally defined the metre based on the size of the earth, ... = 0.000 001 m 2: 1 km 2 (square ... the standard value of ...
Earth radius (denoted as R 🜨 or R E) is the distance from the center of Earth to a point on or near its surface. Approximating the figure of Earth by an Earth spheroid (an oblate ellipsoid), the radius ranges from a maximum (equatorial radius, denoted a) of nearly 6,378 km (3,963 mi) to a minimum (polar radius, denoted b) of nearly 6,357 km (3,950 mi).