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Radius of a Circle from Chord Calculator

Segment of circle

Having an arc (circular segment) and knowing it's height (chord) and length of its base, you can calculate the radius of the circle of which the chord is part.

The formula for the radius of a circle from an arc is
Radius = (base-length^2 / (8 * chord-length)) + chord-length/2.

All length units entered should be of the same measurement system, i.e. all metric or all English, and of the same base i.e. all centimeters or all meters, or all inches or all feet. Then the area output will those same units.

Note: Before using the results from this calculator, check this site's Web Site User Agreement. Also I would be greatful to hear your comments and suggestions about this app, or anything else. use the Contact Form.

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