Find the areas of the surfaces generated by revolving the curves in Exercises 31–32 about the indicated axes. 31. x = cos t, y = 2 + sin t, 0<= t<= 2pai; x-axis 32. x = (2/3)t^(3/2), y = 2sqrt(t), 0<=t<= sqrt(3); y-axis

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Find the areas of the surfaces generated by revolving the curves in Exercises 31–32 about the indicated axes.

31. x = cos t, y = 2 + sin t, 0<= t<= 2pai; x-axis

32. x = (2/3)t^(3/2), y = 2sqrt(t), 0<=t<= sqrt(3); y-axis

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