A ring is a shape or figure that is plane (2 dimensions) and perfectly round, with all points in the edge equidistant from the center. The ring is has 2 radius also has 2 circumferences. Area Definition. It is the space of the internal surface in a figure, it is limited for the perimeter. Also, the area can be calculated in a plane of two

Area of an annular ring is A = π * (R² - r²) Where, R is the radius of an outer circle. r is the radius of an inner circle. If you know diameter of annulus circle, Area of an annulus (ring) is A = (π / 4) *

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