* Equatorial radius – is a line from the center to the equator point. Actually, it has a length of 6378.1 km.
polar connects the central point with the geographic pole.
* And as you know, distinguish between the North and South poles. According to scientists, it is equal to 6356.8 km. As you can see, its length is less than the previous one. Obviously, this is due to the shape of the Earth. As you know, our planet is not perfectly rounded in shape, but slightly flattened at the poles. Therefore, a convexity is observed at the equator, which leads to an increase in the distance from one point to another. This explains the difference between the considered distances.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.