The ratio of the measure of central angle PQR to the
measure of the entire circle is
The area of the shaded sector is 4 units
The area of the shaded sector depends on the length of
the radius.
The area of the shaded sector depends on the area of
the circle
The ratio of the area of the shaded sector to the area of
the circle is equal to the ratio of the length of the arc to
the area of the circle.