The mean radius of Earth is 6371 km or approximately a 6400 km.

Explanation:

The average distance from the physical centre to the surface is used to calculate the Earth’s mean radius, which is based on a vast number of samples. The figure, denoted by the letter R, is roughly 6,371,000 metres (6.371 x 106 m). This equates to 3,960 statute miles or 6,371 kilometres (km).

## Ishu

The mean radius of Earth is

6371 km or approximately a 6400 km.Explanation:The average distance from the physical centre to the surface is used to calculate the Earth’s mean radius, which is based on a vast number of samples. The figure, denoted by the letter R, is roughly 6,371,000 metres (6.371 x 106 m). This equates to 3,960 statute miles or 6,371 kilometres (km).