Radius Command

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Radius[ <Conic> ]
Returns the radius of a conic.
Example:
  • Returns the radius of a circle c (e.g. c:(x - 1)² + (y - 1)² = 9) Radius[c] yields a = 3.
  • Returns the radius of a circle formula Radius[(x - 2)² + (y - 2)² = 16] yields a = 4.
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