Michelle Corey, C.N.W.C., F.M.C., is a Wellness Recovery Expert, researcher and author of The Thyroid Cure â The Functional Mind-Body Approach to Reversing Your Autoimmune Condition and Reclaiming Your Health! Michelle healed herself of Hashimotoâs and lupus and has been free of symptoms and antibodies since 2009.
At it's most expansive, the Roman Empire was about 5 million square kilometers (2 million square miles). The United States is far larger, at 9.8 million square kilometers (3.8 million square miles).
The Earth's Diameter is 7926.41 miles. The surface area of Earth is (pi x Diameter) = 197.38 million square miles (where pi = 3.14159265358979). However, the Earth only has 57 million square miles of land (that's 36.48 billion acres; there are 640 acres per square mile). However, there are only 12 million square miles (7.68 billion acres) of arable land.