The distance around the Earth, that is it's circumference at the equator is 40,091 kilometers. The diameter (the distance across the centre of the Earth) at the equator is 12,756 kilometers. The Earth is slightly smaller when measured between the poles ( 12,713 Kilometers), so it is not an exact sphere. If the Earth is weighted on a weighing machine it would be nearly 6,000 million million million tones.
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