A cylindrical hole is put through a ball of radius a (>b) to form a ring. I am trying to find the outer surface area of the ring. I know i am supposed to parametrise the ring in some way, as we are learning about parametrizing surfaces. But I don't really know how to go about solving this problem.(adsbygoogle = window.adsbygoogle || []).push({});

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# Homework Help: Perplexing Problem

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