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Swap miles for km. It’s about the same for arbitrary vastness.

Well under an order of magnitude off.

For those with high school math ability, it's doable to notice that 10000 sqm is the area of a square with side 100 m, so about a patch of 160 km by 160 km.

If it helps, the London metro is ~3200 square miles, and has more than twice the population of Atlanta (14 million vs 6 million).

Paris is ~4600 square miles with 13 million pop.

Berlin's full metro is actually comparable. It's about 11,000 square miles, but it's also nearly 1/10th of ALL of Germany.

Not all non-Americans are daunted by the effort of making a single Google search.