Circle Sector, Segment,
Chord and Arc Calculator

Click here for the formulas used in this calculator.
For angles in circles formed from tangents, secants, radii and chords click here.

Circle Calculator

Click on the 2 variables you know

        Radius and Central Angle
        Radius & Chord AB
        Radius & Segment Height ED
        Radius & Apothem OE
        Radius & Arc AB
        Chord AB & Segment Height ED
        Chord AB & Apothem OE
        Segmnt Hght ED & Apothem OE
        Chord AB & Arc AB

Significant Figures >>>
Numbers are displayed in scientific notation in the amount of significant figures you specify. For easier readability, numbers between 1,000 and -1,000 will not be in scientific notation but will still have the same precision.
You may change the number of significant figures displayed by changing the number in the box above.
Most browsers, will display the answers properly but if you are seeing no answers at all, enter a zero in the box above, which will eliminate all formatting but at least you will see the answers.


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