$\"\"$

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The given function is $\"\"$ about the x - axis.

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

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$\"\"$ (Apply disk method)

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$\"\"$

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$\"\"$ (Integrate)

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$\"\"$ (Substitute)

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$\"\"$ (Multiply)

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$\"\"$

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$\"\"$

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The solution is $\"\"$ .