Area of an Annulus

Description

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

Variables

Aarea of an annulus (m2)
πpi
Rlarger circle radius (m)
rsmaller circle radius (m)