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How do you work out a circles area?

Updated: 8/17/2019
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Wiki User

12y ago

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pi times the radius squared or pi (approx 3.14) times the diameter

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12y ago
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Q: How do you work out a circles area?
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Do concentric circles have the same area?

Concentric circles have the same center. They are not necessarily the same size. If two concentric circles have the same area, then they are congruent, meaning they coincide when superimposed.


Can a circles area be a fraction?

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What facts are there about the area of a circle?

The derivative of a circles area is it's circumference.


How do you work out the area between to circles one has a diameter of 3.5m and the other inside it is 3.1m?

area = pi*radius2Remember, to half the diameter to get the radius.Get the area of the outside circle, and the area of the inside circle, then take the inside area from the outside.I think it would be more helpful to you not to give you the answer. Work it out from this. If you are wondering what pi is, it is 3.14159


How can pi be used?

Pi (3.141...) is used for circles, and circles only. You use it to find the area and circumfrence.


What is the answer to finding the area of 4 semi-circles with the diameter of 10 centimeters?

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How is pie related to area of circles?

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Is a sector a portion of a circle's area?

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What is the formula for the area of circles?

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