Correction for the size of Lake Ontario
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How big is 12,367,700,000 square meters?
It's about two-thirds as big as Lake Ontario
The size of Lake Ontario is about 18,960,000,000 square meters.
(a.k.a. Lac Ontario) (surface area)
The smallest of North America's Great Lakes (by surface area), Lake Ontario has a total area of 18,960,000,000 square meters. It borders the cities of Toronto, Ontario, Canada and Rochester, New York.