What is the approximate distance from the Earth's surface to the center?

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Multiple Choice

What is the approximate distance from the Earth's surface to the center?

Explanation:
The distance from the Earth's surface to its center is the planet’s radius. The Earth’s mean radius is about 6,371 kilometers, which is commonly rounded to 6,400 kilometers for quick estimates. Since the diameter is roughly 12,742 kilometers, half of that—about 6,371 km—is the distance to the center. So the best rounded answer is about 6,400 kilometers. The other figures are either far too small or larger than the actual radius.

The distance from the Earth's surface to its center is the planet’s radius. The Earth’s mean radius is about 6,371 kilometers, which is commonly rounded to 6,400 kilometers for quick estimates. Since the diameter is roughly 12,742 kilometers, half of that—about 6,371 km—is the distance to the center. So the best rounded answer is about 6,400 kilometers. The other figures are either far too small or larger than the actual radius.

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