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It is pi, a letter in the Greek alphabet, and pronounced like pie. This infinite value, usually expressed as 3.14 or sometimes more accurately as 3.1416 is the ratio of the diameter (distance across) a circle, and the circumference (distance around) a circle. The diameter times pi equals the circumference, and the circumference divided by pi gives the diameter. Also, the radius (half the diameter) times itself and then multiplied by pi gives the area inside a circle. The value of pi is the same regardless of the size of a circle.
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What is the relationship between the area and the radius?
In relation to the area of a circle: pi*radius^2
What would be a good way to represent the relative sizes of parts of a whole?
A pie chart would show this. The full circle represents the whole, and each slice shows how big each part is in relation to the whole.
What is the other name of pie graph?
Circle Chart or Circle Graph
What is a pie-shaped section of a circle?
sector
How much is a pie volume?
How big is the pie? Or, if you're speaking of pi, you have to know the size of the circle.
