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Q: Irregular shape of earth is described using :
  • A. Ellipsoid
  • B. Geoid
  • C. Mean sea level
  • D. Mercator
Correct Answer: Option B - The earth is described as a geoid because it is not a perfect shear. Instead, it is an irregularly shaped three-dimensional figure that approximates the shape of an oblate spheroid. The term "geoid" is used to describe the earth's shape in order to account for these variations in its surface.
B. The earth is described as a geoid because it is not a perfect shear. Instead, it is an irregularly shaped three-dimensional figure that approximates the shape of an oblate spheroid. The term "geoid" is used to describe the earth's shape in order to account for these variations in its surface.

Explanations:

The earth is described as a geoid because it is not a perfect shear. Instead, it is an irregularly shaped three-dimensional figure that approximates the shape of an oblate spheroid. The term "geoid" is used to describe the earth's shape in order to account for these variations in its surface.