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Area and Arc Length of Circular Segment


segment-chord.png

Dimensions

Chord - a =

Height - b =

Radius

r = b/2 + a2/(8·b)

Angle

α = 2·asin(a/(2·r)) °

Area

A = 0.5·(π·α/180 – sin(α))·r2

Arc length

S = π·r·α/180

Chord a must be greater or equal to 2·b


Substitute