The radius of the earth is about:
- 6,370 km
- 3,670 km
- 12,700 km
- 1,637 km
Show answer and solution
Correct answer: A. 6,370 km
1. No one can reach the centre to sample it.
2. The radius is 6,370 km.
3. Knowledge of the interior comes from inferences.
_Source: syllabus Fundamentals of Physical Geography, Chapter 3, Interior of the Earth._