Eurasia.
The biggest land mass in the world is Asia. It is the largest continent covering approximately 30% of the Earth's total land area.
Yes, it covers 10% of the earth's surface, this land mass.
Water has a larger surface area on the earth. Land has a greater mass.
Wyoming is 253,374 km². The total surface area of the earth is 510,072,000 km², Wyoming, then, covers ~1/2013 of of the surface of the globe. The mass of the earth is 5.9736 × 1024 kg. Assuming that the land mass of Wyoming extends from its surface to a point at the center of the earth, it would be 2.967x1021 kg.
The big mass of land is called a continent. Continents are large, continuous areas of land that make up the Earth's surface.
Antarctica is a land mass that covers 10% of the earth's surface. It is covered -- 98% -- by an ice sheet.
Approximately 67% of the total land mass is in the norther hemisphere
less tan 1/2 Excluding Antarctica approximately 78 percent of Earth's land mass is above the Equator
Asia takes up 8.6% of Earth's total land area.
Asia is the biggest in land mass.
For the earth, about 70% of the surface is water. This makes up about 2% of the mass.
An example of a land mass is a continent or a country. Even maybe a very large island.