Question

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

1. C^2=4πA
2. 36π
3. 5cm 31.4 cm and 78.5 cm^2
4. A=πr^2
5. C=π2r

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Answer 1

[AI-generated answer — Bot GPT 3.5]

4. A=πr^2