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Khan Academy
Khan Academy: Calculus: 2011 Calculus Ab Free Response #3 (C)
Video shows how to use the disk method to write an integral representing the volume of the solid generated by rotating two intersecting functions around a line. [6:39]
Khan Academy
Khan Academy: Calculus: 2011 Calculus Bc Free Response #3 (B & C)
Video shows how to use the disk method to find the volume of a solid of rotation. Also shows how to use the chain rule to find the rate of change of the volume as the length of the solid changes. [8:26]