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Miscellaneous·2016·Easy

ABCDA is a con-cyclic quadrilateral of a circle ABCD with radius r and centre O. If AB is the diameter and CD is parallel and half of AB and if the circle completes one rotation about the centre O, then the locus of the middle point of CD is a circle of radius

ABCDA is a con-cyclic quadrilateral of a circle ABCD with radius r and centre O. If AB is the diameter and CD is parallel and half of AB and if the circle completes one rotation about the centre O, then the locus of the middle point of CD is a circle of radius

Options

  1. a.

    3r / 2

  2. b.

    2r / 3

    Correct answer
  3. c.

    r / 2

  4. d.

    r / 3

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