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    The Volume of the Solid by Rotating the Region around y-axis

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    Find the volume of a triangle with sides y = 2, y = x+1, y = 11-x. The vertices are (5, 6), (1, 2) and (9, 2). Find the volume by rotating about y-axis:

    (i) Method of disks
    (ii) Cylindrical shell method

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    Solution Summary

    The solution applies two different methods to calculate the volume of solid of revolution formed when R is revolved about the y-axis.