Circle a has a diameter of 9 inches, a circumference of 28.26 inches, and an area of 63.585 square inches. the diameter of circle b is 5 inches, the circumference is 15.70 inches, and the area is 19.625 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)

part c: what observation can you make about the value of pi for circles a and b? (2 points)