$\"\"$

The equation 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 $\"\"$ .

$\"\"$

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