Answer:arc lengths; radius
l guzz.. sry if wrong....
When you say "which," it sounds like it should be multiple choice. Anyways, here's the simplified form of


(When simplifying fractions, you should <em>never</em> have a square root on the bottom. Multiply by the square root to cancel it out)
Answer:
345x32=11040
546/7=78
789x24=18936
Step-by-step explanation: