Find the Area of a Sector of a Circle Having $$\theta$$

Multiple Choice

Find the area of a sector of a circle having radius r and central angle $$\theta$$ . If necessary, express the answer to the nearest
tenth.
-What is the difference in area covered by a single 5 -inch windshield wiper operating with a central angle of $139 ^ { \circ }$ compared to a pair of 5 -inch wipers operating together each having a central angle of $108 ^ { \circ }$ ? Round to the nearest hundredth.

A) $77.45$ in. $^ { 2 }$
B) $16.80$ in. $^ { 2 }$
C) $6.76$ in. $^ { 2 }$
D) $21.80$ in. $^ { 2 }$