What is Earth's spatial surface?

Answer 1

Total surface area of earth: 510,072,000 sq km

Total water surface area: 70.8% (361,132,000 sq km)
Total land surface area: 29.2% (148,940,000 sq km)

Ref: https://tutor.hix.ai

According to modern estimates, the surface area of the Earth is approximately 510 million square km #(5.1 x 10^8 km^2)# or 196,900,000 square miles. Determining this was not only a matter of ascertaining Earth’s dimensions, but also its proper shape.

A nice detailed discussion of the non-spherical model calculations (with graphics) is here: https://tutor.hix.ai

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Answer 2Maya Adams
The spatial surface of Earth refers to its three-dimensional outer boundary, encompassing the land, water bodies, and the atmosphere. It includes the Earth's varied topography, such as mountains, plains, and oceans, as well as the atmospheric layer extending from the planet's surface to space.
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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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