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If circ is 8pi the radius must be 4 so area is 16pi

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Q: What is the area of a circle whose cicumfrence is 8 pie?
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What is the length of the radius of a circle whose area is 100 pie?

10 units of measurement


How do you find the diamter of a circle if you know the area?

In order to find the diameter of a circle if you have the area is to rearrange the formula for the area of a circle to put diameter as the unknown, like so: PIE*d = Area of a Circle d = (Area of a Circle) / PIE Therefore if the area of your circle is 40cm, 40/PIE = 12.73cm and that's the diameter.


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How do you find area of a circle with pie?

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The sign pie is used for finding the area in a circle.


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