Question

i will fan and medal!!
Circle A has a diameter of 8 inches, a circumference of 25.12 inches, and an area of 50.24 square inches. The diameter of circle B is 3 inches, the circumference is 9.42 inches, and the area is 7.065 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)

Answer 1

@Michele_Laino

Answer 2

@Legends

Answer 3

@DarkMoonZ

Answer 4

@jigglypuff314

Answer 5

please the circumference C is given by the subsequent formula:
\[C = \pi D\]
where D is the diameter
furthermore the area A of a circle is given by the subsequent formula:
\[A = \pi \frac{{{D^2}}}{4}\]
where D is the diameter of the circle

Answer 6

Circumference = (pi)*(diameter)
they gave you
Circumference of Circle A = 25.12
and Diameter of Circle A = 8
so (pi) = (Circumference) divided by (Diameter) = 25.12 / 8 = ?

Answer 7

i have no idea what that means

Answer 8

0.265?

Answer 9

try again? :)
25.12 divided by 8

Answer 10

ooh 3.14

Answer 11

yes :)

Answer 12

so part a is 3.14

Answer 13

mhmm
I think it wants you to show the work?

Answer 14

I will but i need help with part b and c too plz @jigglypuff314

Answer 15

Formula for Area of Circle = (pi) * (radius)^2
Radius = (1/2) * (Diameter)
Diameter of Circle A = 8
so Radius = (1/2) * 8 = 4
Area of Circle A = 50.24

(pi) = (Area of Circle A) divided by (radius times radius)

Answer 16

3.14

Answer 17

so part b is 3.14 also?

Answer 18

yes

Answer 19

Part C is? @nincompoop