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.

mariah is studying the life cycle of the monarch butterfly. she must choose one stage in the cycle to present in science class: egg, caterpillar, chrysalis, or adult. she plans to make her choice randomly using a custom spinner divided into four sections. first, however, she spins the spinner 50 times to see the frequencies it generates.

stage times landed on

egg 10

caterpillar 12

chrysalis 15

adult 13

step-by-step explanation: