SOLUTION: both circles have the same center, and the radius of the larger circle is r. if the radius of the smaller circle 3 units less than r, which of the following represents the areas of

Algebra ->  College  -> Linear Algebra -> SOLUTION: both circles have the same center, and the radius of the larger circle is r. if the radius of the smaller circle 3 units less than r, which of the following represents the areas of      Log On


   



Question 757604: both circles have the same center, and the radius of the larger circle is r. if the radius of the smaller circle 3 units less than r, which of the following represents the areas of the shaded regions?

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
both circles have the same center, and the radius of the larger circle is r. if the radius of the smaller circle 3 units less than r, which of the following represents the areas of the shaded regions?
==============
Nothing followed.
Area+=+pi%2Ar%5E2+-+pi%2A%28r-3%29%5E2
= pi%2A%286r+-+9%29 for r >= 3
===============
PS It's not necessary that they have the same center.