How to Calculate Area of Annulus?
Area of Annulus calculator uses area = pi*(Radius of large circle^2-Radius of small circle^2) to calculate the Area, The Area of Annulus formula is defined as the space occupied by annulus and A=pi(R^2-r^2) where R is radius of outer circle and r is radius of inner circle. Area is denoted by A symbol.
How to calculate Area of Annulus using this online calculator? To use this online calculator for Area of Annulus, enter Radius of large circle (R) & Radius of small circle (r) and hit the calculate button. Here is how the Area of Annulus calculation can be explained with given input values -> 65.97345 = pi*(5^2-2^2).