PLS HALP URGENT 1.If the circumference of a circle is 9.1 pi, what is the diameter and radius in terms of pi?
2. If the area of a circle is 196 pi squared, what is the diameter and radius in terms of pi?
ALSO PLS HELP WITH THE REST PICTURES ATTACHED

Find the area of a parallelogram with the given vertices. p(-2, -5), q(9, -5), r(1, 5), s(12, 5)

Select the correct answer from each drop-down menu. a system of equations and its solution are given below. system a complete the sentences to explain what steps were followed to obtain the system of equations below. system b to get system b, the equation in system a was replaced by the sum of that equation and times the equation. the solution to system b the same as the solution to system a.]

Are the corresponding angles congruent? explain why or why not.