+24 What is the measure of the central angle of a circle if the radius is 18 centimeters. Assume that it intercepts a 12pi centimeter arc. I would prefer the answer in degrees if you dont mind.
+14929 What is the measure of the central angle of a circle if the radius is 18 centimeters. Assume that it intercepts a 12pi centimeter arc. I would prefer the answer in degrees if you dont mind.
Hello John!
\(b=\frac{\pi r \alpha}{180^0}\\ \alpha=\frac{b\cdot 180^0}{\pi r}=\frac{12cm\cdot \pi \cdot180^0}{\pi\cdot18cm}\)
\(\alpha=120^0\)
!
