How do you find the surface area of an Elizabethan collar?
Doesn't a collar have two sides?
I know, you very clearly specified the answer for one side!
Elizabethan collars can be different but this is about the most simple of them
It is just annulus.
The area of one side is πR2−πr2
Where R is the big radius and r is the inner radius
Yes and it has got depth as well. (Considered minimal for this exercise)
I thought that the poster could double the number all by him/herself!
+118703 
