2 2 32 3232 53 5 3 5 5 512 5 153 v v wa 1 p 5 20

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2232643264323232325353555126432064155153VVWA 1, p. 5
20.Compute the volume of the solid formed by revolving the region bounded by 2yxand2xyabout (a) the y-axis; (b) x= 1.
26.Let Rbe the region bounded by 2yxand y= 4. Compute the volume of the solid formed by revolving Rabout the given line.(a)y= 4(b) the y-axis(c) y= 6(d) y= –2(e) x= 2(f) x= –4
b.224400420,82baVr dy xyVydyydyyVc.22222112222222222242222532221,1116,6426212364123645323223238488555iobboiaaoooiry ryVrdyrdyVydyydyrxrVxdxdxVxxdxdxxxVxxVd.220222222222422225315152224( 2)6,( 2)26236444376376364727253151521607521408151515irrxxVdxxdxVdxxxdxxxVxxV  WA 1, p. 8
32.Suppose that the circle 221xyis revolved about the y-axis. Show that the volume of the resulting solid is .43WA 1, p. 9

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