The Relationship Between Circumference & Area Quick Check

Question

1 of 51 of 5 Items
Question
Which of the following expressions correctly shows the relationship between the circumference and the area of a circle?(1 point)
Responses

C=2πr
upper C equals 2 pi r

Cd=π
Start Fraction upper C over d End Fraction equals pi

C2=4πA
upper C squared equals 4 pi upper A

A=πr2

Answer 1

C=2πr

Answer 2

If C=12π, what is the area of the circle? (1 point)
Responses

12π
12 pi

24π
24 pi

36π
36 pi

144π