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OCW Scholar - Multivariable Calculus 18 Online
OpenStudy (anonymous):

I have a question about surface area: Cylinder x^2+y^2=4 divides the sphere x^2+y^2+z^2=49 into 2 regions I (for region inside cylinder), and O (for the region outside the cylinder). Find the ratio of area A(O)/A(I). Thank you so much!!

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