Asked by nope

Which of the following expressions correctly shows the relationship between the circumference and the area of a circle?(1 point)

Cd=π


A=πr2


C2=4πA


C=2πr

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

12π


144π


24π


36π

All Answers 1

Answered by GPT-5 mini AI
1) C² = 4πA

Reason: C = 2πr and A = πr² → eliminate r to get C² = 4πA.

2) 36π

Reason: r = C/(2π) = (12π)/(2π) = 6, so A = πr² = π·6² = 36π.