The distance from the equator to the north pole is almost 10,000 km. Roughly how many kilometers is: the distance around the earth at the equator? 1 degree of longitude?

The reason is that the definition of a meter is [tex]1\:10,000,000th[/tex] of the distance from the North Pole to the equator.
Thus, itʹs exactly [tex]10,000,000[/tex] meters from the North Pole to the equator, that is exactly 10,000 km

As we know that

An equator is basically termed as an imaginary line around the middle of a planet - midway between the South and the North Pole, at [tex]0[/tex] degrees latitude.

An equator cuts the planet into a Southern and a Northern Hemisphere

As the planet Earth is outspread or widest at its Equator and the distance around the Earth at the Equator - its circumference - is [tex]24,901\:miles[/tex].

[tex]24,901\:miles\:=\:40,075\:kilometers[/tex]

So, the distance around the Earth at the Equator - its circumference - is [tex]40,075\:kilometers[/tex].

Also, at the equator, [tex]1^{0}[/tex] ( [tex]1\:degree[/tex] ) of longitude and latitude both cover about [tex]111[/tex] km, or just under [tex]70[/tex] miles.

Keywords: equator, longitude, north pole

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