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O P Q R is a square and M ,N are the mid...

`O P Q R` is a square and `M ,N` are the middle points of the sides `P Qa n dQ R` , respectively. Then the ratio of the area of the square to that of triangle `O M N` is 4:1 (b) 2:1 (c) 8:3 (d) 7:3

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