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Cyclic quadrilateral circumradius ( Parameshvara's formula )

Description

In Euclidean geometry, a cyclic quadrilateral or inscribed quadrilateral is a quadrilateral whose vertices all lie on a single circle. This circle is called the circumcircle or circumscribed circle, and the vertices are said to be concyclic. The circumradius of a Cyclic quadrilateral is related to its successive sides and the semiperimeter of the Cyclic quadrilateral.

Related formulas

Variables

RCyclic quadrilateral circumradius (m)
aLength of the side of the cyclic quadrilateral (m)
bLength of the side of the cyclic quadrilateral (m)
cLength of the side of the cyclic quadrilateral (m)
dLength of the side of the cyclic quadrilateral (m)
sSemiperimeter of the cyclic quadrilateral (m)