$\"\"$

\

The area of the parabolic shaded by $\"\"$ .

\

The width of the sector is $\"\"$ , So $\"\"$ .

\

Area of the sector is $\"\"$ square units.

\

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

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

The vertex parabola is $\"\"$ and other point on parabola are $\"\"$ and $\"\"$ .

\

$\"\"$

\

The general form of parabola equation is $\"\"$

\

Substitute $\"\"$ in the general form of parabola equation.

\

$\"\"$

\

$\"\"$

\

Substitute $\"\"$ in the general form of parabola.

\

$\"\"$

\

The parabolic equation is $\"\"$ .

\

$\"\"$

\

The parabola equation is $\"\"$ .