Convert pica to Earth polar radius Online | Free Length Converter

Pica

A pica is a unit of length commonly used in typography and printing to measure font sizes, line lengths, and spacing. It is equal to 1/6 of an inch, or exactly 12 points in the point system.

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  1 pica = 1/6 inch ≈ 4.233 millimeters

  
  
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  1 pica = 12 points

  
  
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  Used primarily in graphic design, printing, and typesetting

  
  
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  Helps standardize the measurement of fonts, columns, and layouts

  
  

The pica remains a fundamental unit in desktop publishing and print design, helping maintain consistency in text and page formatting.

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.

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

  
  
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  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.

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

  
  

Key facts:

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  Polar radius ≈ 6,356.8 km

  
  
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  Smaller than equatorial radius by about 21.3 km

  
  
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  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.