The surface area of a round earth is about 510 million square kms. A flat earth, with a radius of 20,000 kms (north pole to southern edge), is about 1.256 billion square kms. That would make **the area of a flat earth about 2.46 times more than that of a round earth**. I'm pretty sure we all know that simply isn't so. Distances from one side of the southern hemisphere to the other as well as the size of continents would be completely out of whack if that were true. Thoughts?

Area of a sphere = 4 x pi x radius squared (radius of a round earth = 6371 km.)

Area of a circle = 2 x pi x radius squared (radius of a flat earth = 20,000 km.)