$\"\"$

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

Graph:

Graph the polar curve $\"\"$ .

$\"\"$

Observe the graph:

The parameter interval of the curve is $\"\"$ .

Length of a curve with a polar equation $\"\"$ , $\"\"$ is $\"\"$ .

$\"\"$ .

Differentiate with respect to $\"\"$ on each side.

$\"\"$

Substitute $\"\"$ , $\"\"$ and limits of $\"\"$ values in $\"\"$ .

$\"\"$

Using calculator, $\"\"$ .

$\"\"$ .

Arc length of the curve is $\"\"$ .

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Arc length of the curve $\"\"$ is $\"\"$ .