A body moves on three quarters of a circle of radius $r .$ The displacement and distance travelled by it are

  • A

    displacement $=r,$ distance $=3 r$

  • B

    distance $=2 r,$ displacement $=\frac{3 \pi r}{2}$

  • C

    displacement $=\sqrt{2} r,$ distance $=\frac{3 \pi r}{2}$

  • D

    displacement $=0,$ distance $=\frac{3 \pi r}{2}$

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