Total earth's surface covered by water is

The portion of the earth's surface covered with water is roughly

State whether True or False: About 75% of earth's surface is covered by water.

…………of the earth's surface is covered by water . (Half/Three fourths).

Assuming the earth to be a sphere of radius 6370km, how many square kilometres is area of the land,if three-fourth of the earths surface is covered by water?

Assuming the earth to be a sphere of radius 6370 km, how many square kilometres is area of the land, if three-fourth of the earths surface is covered by water?

Assuming the earth to be a sphere of radius 6370 km, how many square kilometres is area of the land, if three-fourth of the earth’s surface is covered by water?