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The curve equation is $\"\"$ .

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Rotation about the $\"\"$ -axis.

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The line equations are $\"\"$ and $\"\"$ .

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Find the volume of the solid using disk method:

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$\"\"$

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$\"\"$

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$\"\"$

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Solve the integral by using trigonometric substitution method.

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$\"\"$

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Find the limits of the integral.

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$\"\"$

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If $\"\"$ ,

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$\"\"$ .

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If $\"\"$ ,

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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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$\"\"$

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$\"\"$

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$\"\"$ cubic units.

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$\"\"$ cubic units.