The true statements about the circle are as follows:
area of a sector = ∅ / 360 × πr²
where
Hence,
area of the shaded portion = 45 / 360 × π × 6²
area of the shaded portion = 4.5π
Therefore, 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 central angle PQR is 45 degrees. The measure of the entire circle is 360 degrees. Therefore, the ratio of the measure of central angle PQR to the measure of the entire circle is 1 / 8.
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