Consider the unit cirlce in the plane; that is, the set of all points within a distance of 1 of the origin:     A= {(x, y) : x^2 + y^2 ≤ 1}. Suppose we choose a point (X, Y ) uniformly at random from S. What is the pdf for the distance B = √X^2 + Y ^2 from the origin to this point?   Hint given: What is the cdf of B?

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