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: Using the formula for circumference, solve for the value of pi for each circle.

Formula of circumference: C = πd

Circle A:

π = C/d = 21.98 / 7 = 3.14

Circle B:

π = C/d = 18.84 /6 = 3.14

Part B: Use the formula for area and solve for the value of pi for each circle.

Formula of area: A = πr^2

Circle A:

A = πr^2 where r = d/2 = 7/2 = 3.5

π = A/r^2 = 38.465 / (3.5)^2 = 38.465 / 12.25 = 3.14

Circle B:

A = πr^2 where r = d/2 = 6/2 = 3

π = A/r^2 = 28.26 / (3)^2 = 28.26 / 9 = 3.14

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

The value of pi for both circles A and B are the same as 3.14.

So it doesn't matter how big or small the circle is, the value of pi always remains the same.

15 grams

Step-by-step explanation: