### Independent, Standard Normal Random Variable Question

Let X,Y be independent, standard normal random variables. Let A={(x,y) belong to R^2: 9<x^2+y^2<16}, Find P((X,Y) belong to A). (See attachment.)

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Let X,Y be independent, standard normal random variables. Let A={(x,y) belong to R^2: 9<x^2+y^2<16}, Find P((X,Y) belong to A). (See attachment.)

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