The perimeter of a certain sector of a circle is equal to the length of the are of a semicircle having the same radius, then the angle of the sector in degree is -\(\left( {\pi = \frac{{22}}{7}} \right)\)

The perimeter of a certain sector of a circle is equal to the length o

1.	The perimeter of a certain sector of a circle is equal to the length of the are of a semicircle having the same radius, then the angle of the sector in degree is -\(\left( {\pi = \frac{{22}}{7}} \right)\)
A.	65° 27’ 16”
B.	65° 45’ 45”
C.	65° 5’ 11”
D.	65° 45’ 5”
Answer» B. 65° 45’ 45”