Two circles , one circle is inscribed and another circle is outscribed over a square. What is the ratio of area of inner to outer circle.

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1. 1 : 2

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2. area of a circle inscribed in a square =(pi/4)*area of square
   area of a circle outscribed in a square =(pi/2)*area of square
   ratio= ((pi/4)*a)/((pi/2)*a)
   = 1/2
   Ratio = 1:2

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