Multiple choice

The approximate radius of the earth in km is:

  1. 12,800

  2. 6,400

  3. 8,000

  4. 4,500
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Earth's radius is approximately 6,400 km, making its diameter about 12,800 km. Earth is nearly spherical but slightly flattened at the poles. This measurement is crucial for understanding Earth's size relative to other planets and for calculations involving gravity and orbital mechanics.

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