← CAT 2018 Slot 1 QA

CAT 2018 Slot 1 QA · Question 2

In a circle with centre O and radius 1 cm, an arc AB makes an angle 60 degrees at O. Let R be the region bounded by the radii OA, OB and the arc AB. If C and D are two points on OA and OB, respectively, such that OC = OD and the area of triangle OCD is half that of R, then the length of OC, in cm, is

  1. A.
    \frac{π}{4}
  2. B.
    \frac{π}{6}
  3. C.
    \frac{π}{4√3}
  4. D.
    \frac{π}{3√3}

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