Area of a Circular Ring
In this section we will tell you regarding the area of a circular ring :
The area of a ring bounded by two concentric circle of radii R and r (such that R > r)
= Outer circle’s area – Inner circle’s area
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= a(R + r) (R – r)
Hence, the area of a circular ring = a(R + r) (R – r), we know that R and r are the radii of the bigger circle and the smallest circle respectively.