3. 2- 1- ol 1 4 Let R be the region bounded by the graph of y = Va – 1, the horizontal line y = 2, and the vertical line a = 1, as shown in the figure above. Which of the following gives the volume of the solid generated when the region Ris revolved about the vertical line a = 1? * [ (s² + 1) – 1) dy B dy "[ (6* + 1) – 1)*dy (D +

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