Find the volume of the solid generated by revolving the shaded region about the y-axis. The volume of the solid generated by revolving the shaded region about the y-axis is (Type an exact answer, using π as needed.)
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Find the volume of the solid generated by revolving the shaded region about the y-axis. The volume of the solid generated by revolving the shaded region about the y-axis is (Type an exact answer, using π as needed.)