A circle with a circumference of 100cm and a 22cm arc of this circle is cut out - what is the measure of the arc in degrees

Need ! discuss how to convert the standard form of the equation of a circle to the general form. 50 points

Asap! i'm not good math and i'm lost.

Given: lines a and b are parallel and line c is a transversal. prove: 2 is supplementary to 8 what is the missing reason in the proof? statement reason 1. a || b, is a transv 1. given 2. ∠6 ≅ ∠2 2. ? 3. m∠6 = m∠2 3. def. of congruent 4. ∠6 is supp. to ∠8 4. def. of linear pair 5. ∠2 is supp. to ∠8 5. congruent supplements theorem corresponding angles theorem alternate interior angles theorem vertical angles theorem alternate exterior angles theorem