Circular Segment Calculator

Calculation on a circular segment. A circular segment is formed by a circle and one of its chords. Enter the values of the radius of the circle, the height of the segment and its angle. Angles are calculated and displayed in degrees.

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Circular segment

Radius (r)
Height (h)
Corner (α)
Arc length (l)
Chord length (m)
Perimeter (P)
Square (S)

Formulas

α = 2 * arccos ( 1 – h / r )
h = r * ( 1 – cos(α/2) )
l = r * α
m = 2 * √2 * r * h – h2
p = l + m
S = r * l / 2 – m * ( r – h ) / 2