The measure of the value of x is 49.5 degrees, the correct option is B.
Given
The measure of arc QS is (4x – 18)°.
<h3>The measure of arc</h3>
Arc QS is a semicircle and hence subtended angle by semicircle at the center is 180 degrees.
The measure of the arc QS is (4x – 18)° is equal to 180 degrees.
Then,
The value of x is;
Hence, the measure of the value of x is 49.5 degrees.
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