how big is the earth – Physics Zone

Question: how big is the earth
- Keywords:
  earth,
  size,
  space
Asked by anon-269992 on 12 Nov 2020.
- Viviene Dela Cruz answered on 12 Nov 2020:
  
  If you take one point on the Earth to exactly the opposite side of it, covering the middle, the Earth is 12,742 kilometres (in diameter). If you want to walk around it, on the equator, the Earth is about 40,000 kilometres (circumference). That’s roughly 52 million steps! 🙂
- ORIANA TREJO ALVAREZ answered on 12 Nov 2020:
  
  Earth is 6.371 km in comparison with the sun that is 696.340 km! This means that inside the sun we can fit almost 1.3 million piles of earth.
- Zsolt Keszthelyi answered on 13 Nov 2020:
  
  The ancient Greeks could already calculate this. Very impressive!

Question: how big is the earth