Spherical Cap Reflector

A spherical cap is the portion of a sphere cut off by a plane. Enter exactly two of the five quantities below; the remaining three will be computed.

C (sphere center / focal point) R h a θ A (cap area) R = sphere radius (center → cap surface) h = cap height (chord plane → apex) a = base radius (radius of circular edge) θ = half-opening angle at center; A = curved surface area
R = cm
h = cm
a = cm
θ = deg
A = cm²
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