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The parabola equation is $\"\"$ .

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The parabola divides the disk $\"\"$ in two two parts.

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The disk is divided in to $\"\"$ and $\"\"$ where $\"\"$ is the area enclosed by the parabola $\"\"$ and the semi circle $\"\"$ .

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$\"\"$ is the lower part of the disk.

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Area of the disk $\"\"$ .

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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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Area $\"\"$ .

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$\"\"$

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$\"\"$

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Apply special integral formula: $\"\"$ .

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$\"\"$

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$\"\"$

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If $\"\"$ , then $\"\"$ .

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If $\"\"$ , then $\"\"$ .

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$\"\"$

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$\"\"$

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Area of $\"\"$ $\"\"$ square units.

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Area of $\"\"$ $\"\"$

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$\"\"$ square units.

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Area of the two parts are $\"\"$ square units and $\"\"$ square units.