Multiple choice general knowledge science & technology

What is the approximate radius of earth?

  1. 6400 km

  2. 10200 km

  3. 12800 km

  4. 3200 km
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A Correct answer
Explanation

Earth's radius is approximately 6,371 km, commonly rounded to 6,400 km. This value represents the distance from Earth's center to its surface. The diameter is about 12,742 km (option C shows a confused diameter value). Earth is not a perfect sphere but an oblate spheroid.

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