in a triangle the sum of 2 sides is x and the product of the same 2 sides is y . if x^2 - c^2 =y, where c is the third side , the in-circle to the circum-radius of the triangle is

1)3y/2x(x +c) 2) 3y/2c(x +c) 3) 3y/4x(x+c) 4)3y/4c(x+ c)beautiful question

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