The average diameter of the Earth is ________.
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 12756 km
The Earth’s diameter is about 12,756 km across the equator, which is the figure usually given for its diameter; the radius is about 6,378 km. The Earth bulges slightly at the equator, so the diameter from pole to pole is about 43 km less, about 12,714 km.