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) Part C: What observation can you make about the value of pi for circles A and B? (2 points)

Part A

C = πd

Circle A: 21.98 = π * 7 → π = 3.14

Circle B: 18.84 = π * 6 → π = 3.14

Part B

A = πr², r = d / 2

Circle A: 38.465 = π * 3.5² → π = 3.14

Circle B: 28.26 = π * 3² → π = 3.14

Part C

An observation you can make is that the value of pi stays the same in both of the circles, therefore, it's a constant.

walter needs to make at least 5 more cookies but no more than 40. 5 ≥ x ≥ 40;

step-by-step explanation:

walter has to make a minimum of 20 cookies. he already has 15 cookies made, so he must make 5 more to meet the minimum.

the maximum amount of cookies he can make is 55. he already has 15, so he has to make no more than 40 more cookies to meet the maximum.