In the north and south poles the earth is a little flattened and the area is less so earth is not perfectly round in shape
Issac newton first proposed that earth was not perfectly round.instead,he suggested that vit was an obtable spheroid sphere that is squased as its poles and swollen at equator.he was correct and bacause of his bulge,the center to sea level is roughly 21 kilometres 13 miles greatar at the equator than at the poles.
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