$\"\"$

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Observe the graph:

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The function is $\"\"$ .

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

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Disk method:

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

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In this case $\"\"$ .

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

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$\"\"$

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$\"\"$

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Apply power rule of integration: $\"\"$ .

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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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$\"\"$ .