In the figure below, lines m and n are parallel: In the diagram shown, ∠6 measures 97 degrees. What is the measure of ∠5?

A: 83 degrees
B:90 degrees
C:97 degrees
D: 180 degrees

Circle a has a diameter of 7 inches, a circumference of 21.98 inches, and an area of 38.465 square inches. the diameter of circle b is 6 inches, the circumference is 18.84 inches, and the area is 28.26 square inches. part a: using the formula for circumference, solve for the value of pi for each circle. (4 points) part b: use the formula for area and solve for the value of pi for each circle. (4 points)