Help! Now help! ASAP!I’ll make you now please

How do you find the circumfrance of a circle?

40 points. given: two congruent angles ∠c and ∠r are supplementary. prove: ∠r and ∠c are both right angles. it doesn't have to be exactly 10 rows. statements reasons1. 1. 2. 2. 3. 3. 4. 4. 5. 5. 6. 6. 7. 7. 8. 8. 9. 9. 10. 10.

Suppose the equation ||x-a|-b|=2008 has 3 distinct real roots and a not =0. find the value of b.