About 30% of the earth’s surface is land so if the land was distributed uniformly across the earth, about 9% (30% x 30%) of the surface would be land at both points on the antipode. However, most of the land is on the northern hemisphere, so 4% feels reasonable.
No-Recording2937 t1_j4z9qc2 wrote
Reply to TIL that only about 4% of the Earth's surface has two points on opposite sides of the world that are both on land by A_1337_Canadian
About 30% of the earth’s surface is land so if the land was distributed uniformly across the earth, about 9% (30% x 30%) of the surface would be land at both points on the antipode. However, most of the land is on the northern hemisphere, so 4% feels reasonable.