INDIAN GEOGRAPHY

Detailed explanation-1: -Earth’s surface is the top layer of Earth’s rigid or liquid structure, at the interface with its atmosphere. Earth as an idealized spheroid has a surface area of about 510 million km2 (197 million sq mi).

Detailed explanation-2: -The total surface area of the earth is 510 million square km approximately or 510, 100, 500 square km. Hence option A is correct.

Detailed explanation-3: -The percentages of earth’s land surface can be divided into different types: 20% covered by snow land, 20% mountains, 20% dry land, 30% good land that can be farmed, 10% land doesn’t have topsoil. In my research all of the data found on the land surface area was around 1.5 × 108 km2.