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Earth Polar Radius


The Earth's polar radius is the distance from the center of the Earth to the North or South Pole. It measures the Earth’s radius along its rotational axis.



  • Its value is approximately 6,356.8 kilometers (about 3,949.9 miles).



  • The Earth is an oblate spheroid, so the polar radius is slightly shorter than the equatorial radius due to the planet's flattening at the poles.



  • This measurement is crucial for geodesy, understanding Earth’s shape, and satellite navigation.



Key facts:



  • Polar radius ≈ 6,356.8 km



  • Smaller than equatorial radius by about 21.3 km



  • Important for precise Earth modeling and mapping



The difference between the polar and equatorial radius reflects the Earth’s rotation and its effect on the planet’s shape.



Rope


A rope is a traditional unit of length used mainly in land measurement, especially in parts of India, Pakistan, and other South Asian countries. The exact length of a rope can vary by region, but it is generally around 20 to 25 feet (approximately 6 to 7.6 meters).


In some places, a rope is defined as 20 feet or 6.096 meters, and it is often used in agriculture and construction for measuring land or distances. The term “rope” is more of a customary or local measurement rather than a standardized unit like a foot or meter.


Because of its regional nature, the rope is not commonly used in international or scientific contexts, but it remains important in traditional surveying and rural land measurement in certain areas.



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