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(a) A cylindrical drill with radius is used to bore a hole through the center of a sphere of radius . Find the volume of the ring-shaped solid that remains. 

(b) Express the volume in part (a) in terms of the height of the ring. Notice that the volume depends only on , not on or . 

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Kristina Dela Cruz
Kristina Dela CruzLv10
26 Jan 2021

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