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# What is the function of Pi?

The mathematical constant pi has many uses, most of which are associated with the circle or circular objects. Often, pi is used for geometric purposes, such as calculating the area of a circle or the volume of a sphere.

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Pi is an irrational number that does not have a specific value that can be shown. Often, the value is rounded to 3.14 or shown as the fraction 22/7. Outside of mathematics, pi is also used in physics for calculating measurements such as angular velocity. Pi is also necessary when converting between degrees and radians, as one radian is equal to pi/180 degrees.

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## How do you figure out the circumference of a circle?

A: To find the circumference of a circle, multiply the diameter by pi or double the radius times pi. Pi is an unchanging number that rounds off to 3.14. Full Answer >Filed Under: -
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## What is a radius?

A: The radius of a circle is the length of a line segment from its center to its outer edge. The same definition also applies to the radius of a sphere. Alter... Full Answer >Filed Under: -
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## What is the equation for arc length?

A: The length of an arc of a circle is equal to the angle subtended by the arc, in radians, times the radius of the circle. For an angle measured in degrees, ... Full Answer >Filed Under: -
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## How do you divide a circle with eight equal pieces with three straight lines?

A: To divide a circle into eight equal pieces with three straight lines, first draw two diameters that partition the circle into four sections. Next, separate... Full Answer >Filed Under: