8. Find the areas of the surfaces generated by revolving the curves: (a) x=2/4-y, 0sys15/4 about the y-axis. (b) x= /2y-1, 0sys15/4 about the y- axis. See figures for part (a) and (b) respectively. 15/4 (1, 15/4) (1, 1) x 2V4-y x = V2y- 1 5) 1/2

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