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Q: What is the exact circumference of a circle with a diameter of 21 inches?
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What is the exact circumference of a circle with a diameter of 11 inches?

the exact circumference is 11pi inches


What would be the exact circumference of a circle if a diameter in 31 inches?

31x3.1416=circumference


What is the diameter of a circle with a circumference of 11 inches?

To be exact, it is 11/π. For a rough numerical representation of it, it is about 3.50140875.


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Circumference of the circle: 7.4*pi cm


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What is the exact history of mathematical pi?

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What is circumference of a circle with a radius of 4 cm?

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