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if a circle has an area and a circumference that are exactly the same then what does the radius of the circle have to be?

1 Answer

7 votes

Answer:

2

Explanation:

1. Identify the equations

Area of the circle


A = \pi r^2

Circumference of the circle


C=2\pi r

2. Set up an equation.


\pi r^2 = 2\pi r

3. Solve for r.


\pi r^2 = 2\pi r


r^2 = 2r


r=2

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