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Is the radius dimensionless?

  1. Jun 21, 2008 #1
    I'm inclined to believe that radius is a measure of length, so doesn't that mean it's dimensional?

    I am probably wrong...

  2. jcsd
  3. Jun 21, 2008 #2
    SI unit of length is meter, and yes, radius is a length, is defined as the line segment trough the center to any point of the circunference
    Last edited: Jun 21, 2008
  4. Jun 21, 2008 #3
    I think you're thinking of radians which in fact are dimensionless.
  5. Jun 21, 2008 #4

    shoot you're right, radians, not radius. Thanks you're right.
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