It is 510.1 trillion m² (google result).

3x3 is 510.1/9 - 56 trillion (and change).

> 196,936,994 m^2

Is equivalent to a perfect square with sides 14km long...they say it's a small world..but not that small.

The explanation of the discrepancy is that I had interpreted the numbers in OP article and in parent as miles, not meters.

https://solarsystem.nasa.gov/planets/earth/by-the-numbers/ Volume: 6.73 x 1011 cubic miles (1.083 x 1012 km3) Radius: 3,959 miles (6,371 km) Diameter: 7,918 miles (12,742 km) Surface Area: 1.97 x108 square miles (5.1 x 108 km2) Mass: 5.972 x 1024 kg

The standard symbol for "square miles" is "sq mi."

"m²" or "m ^ 2" universally refers to square meters (unless you've established unambiguously that you're talking about miles — and even if you have it should still be "sq mi").

Your surface area is totally incorrect.

It is not incorrect. Its in US miles, not meters. I mistook the original as posting in miles and responded in kind. meters makes more sense--more fine-grained.

Yes, that's pretty much the definition of incorrect.