Area of an Annulus Sector


In mathematics, an annulus (the Latin word for “little ring”, with plural annuli) is a ring-shaped object, especially a region bounded by two concentric circles. The adjectival form is annular (as in annular eclipse).

Related formulas


Aarea of an annulus sector (m2)
θangle(radians) (dimensionless)
Rlarger circle radius (m)
rsmaller circle radius (m)