$\"\"$

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The equation of the curve is $\"\"$ .

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Graph the function $\"\"$ for $\"\"$ and $\"\"$ .

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$\"\"$

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Observe the diagram as $\"\"$ , the curve become square with side length $\"\"$ .

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$\"\"$ .

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Side length of the square is $\"\"$ .

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Perimeter of the square is $\"\"$ .

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$\"\"$ .

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$\"\"$

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The equation of the curve is $\"\"$ .

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Substitute $\"\"$ in the above equation.

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$\"\"$

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Here $\"\"$ and $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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Length of the curve is $\"\"$ .

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$\"\"$

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Thus, $\"\"$ .

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$\"\"$

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Graph of the function $\"\"$ for $\"\"$ and $\"\"$ .

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$\"\"$

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$\"\"$ .