a geographical map
A contour map, possibly.
It's about 25-30 percent land.
You cannot get the square footage of land which is measured in 5 dimensions. In fact I am not sure where you would find 5-dimensional land.
The term "area" refers to the measurement of the surface of a two-dimensional shape or region, expressed in square units. It quantifies the extent of a flat surface enclosed within specific boundaries, such as a rectangle, circle, or triangle. Area is a fundamental concept in geometry and is used in various fields, including architecture, land use planning, and agriculture, to assess space and resource allocation.
Maps being two-dimensional can lead to distortions in representing the Earth's three-dimensional surface, affecting the accuracy of distances, areas, and shapes. This limitation can mislead users, especially in applications like navigation or land use planning, where precise spatial relationships are critical. Additionally, important features like elevation and terrain are not adequately conveyed, potentially oversimplifying complex geographical realities.
A contour map, possibly.
Generally speaking, and if you are talking about representing the whole of earth's surface in one mapping, it would be a globe. But for many purposes a globe would have to be impractically large in order to match the precision of various other maps made for specialized purposes and covering smaller areas.
A world contour map shows the elevation or depth of land and ocean floor features using contour lines. These lines connect points of similar elevation or depth to provide a visual representation of the terrain in a two-dimensional format. World contour maps help in understanding the topography and bathymetry of the Earth's surface.
There can be no answer. Square acre is a measure in 4-dimensional hyperspace. Land is not 4-dimensional and we cannot perceive 4-d space.
Maps distort land masses because it is impossible to accurately represent a three-dimensional object (Earth) on a two-dimensional surface (paper or screen). This distortion occurs because of the challenge in projecting a curved surface onto a flat plane, leading to inaccuracies in representing the true sizes and shapes of land masses. Different map projections are used to minimize distortion in specific areas, but some level of distortion will always be present in map representations.
Planimetric maps are useful for providing visual representation of physical features on a flat surface, facilitating navigation and spatial analysis. They are commonly used in urban planning, land surveying, architectural design, and infrastructure development. These maps depict two-dimensional features such as roads, buildings, rivers, and boundaries with accuracy for planning and decision-making purposes.
Mapmakers have to deal with the challenge of representing a three-dimensional object (Earth) on a two-dimensional surface (map). This leads to distortions in either land shapes or sizes, known as map projection distortion. Mapmakers have to prioritize either preserving shapes or accurately representing sizes when choosing a map projection.
The term that refers to all the land surface of the earth is "Lithosphere."
About one third of the land surface of the earth is desert.
Earth is three-dimensional, but maps are two-dimensional.
Land is above the waterline. No surface currents can flow over land.
About 33% of the earth's land surface is covered by deserts. That's 1/3 of the surface.