2 ms·

I believe you are referring to the Valeriepieris circle https://en.wikipedia.org/wiki/Valeriepieris_circle#/media/File:Valeriepieris_circle.svg https://en.wiki

• corrral 4y ago
  Yep, that's the one. Ballpark 7% of the Earth's surface, or 15% of the land-surface area (guesstimate based on the whole circle being about 22% of the land surface area—but much of the circle is over water). Over 50% of the population.
  • Beldin 4y ago
    One of the claims of the circle was that over half of it was water. So then your guesstimate can be lowered to less than 11% of land surface area.