$\"\"$

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The curve equations are $\"\"$ , $\"\"$ and $\"\"$ .

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The plane is revolving about the $\"\"$ -axis.

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The integral limits are $\"\"$ to $\"\"$ .

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The distance from the center of the rectangle to the axis of revolution is $\"\"$ .

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The height of the rectangle is $\"\"$ .

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Shell method:

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The vertical axis of revolution.

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The volume of the solid is $\"\"$ .

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Substitute $\"\"$ , $\"\"$ , $\"\"$ and $\"\"$ in $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ .

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$\"\"$ .

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$\"\"$

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$\"\"$ .