$\"\"$

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Consider a point $\"\"$ on upper boundary of the region.

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$\"\"$

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The total area is $\"\"$ times the area of the shaded region to the right.

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$\"\"$

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$\"\"$

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Check whether the curve $\"\"$ intersect the line $\"\"$ or not.

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Substitute $\"\"$ in $\"\"$ .

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$\"\"$

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$\"\"$

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Roots of the equation $\"\"$ is $\"\"$ .

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Since negative values are not considered, the root is $\"\"$ .

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Thus, the boundaries are $\"\"$ and $\"\"$ .

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Total area :

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$\"\"$

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$\"\"$

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Therefore, the total area is $\"\"$ .

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$\"\"$

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Total area is $\"\"$ .