Circles and Arc Length

Arc  $$AB$$  is 13. The measure of angle  $$ACB$$  is  $$110\degree$$ . What is the circumference of the circle? 

The circumference of the circle is 50. The measure of angle  $$WXZ$$  is  $$100\degree$$ and the measure of angle  $$ZXY$$  is $$140\degree$$ . What is the length of arc WZY ?  

The circumference of the circle is 70. What is the length of semicircle JLK ?

The central angle ADC is  $$268\degree$$ . The circumference of the circle is 64. What is the length of major arc $$ABC$$ ? 

What is the length of arc BB'?

Find the arc length.  Leave your answer in terms of π.

The two central angles shown are each  $$30\degree$$ . They each have a corresponding arc length of 10. What is the circumference of the circle? 

Arc $$NM$$ is 20. The measure of the central angle is  $$15\degree$$ . What is the circumference of the circle? 

The radius of the circle is 16. What is the circumference?

The circumference of the circle is 28.27. What is the diameter?