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Two circles have the same center C. (Circles which have the same center are called concentric.) The larger circle has radius 10 and the smaller circle has radius 8. Determine the area of the ring between these two circles.

 Jun 22, 2021
 #1
avatar+33556 
+3

Area of a circle = pi r^2        do this for the larger circle  and the smaller circles  then subtract the area of the smaller from the larger.

 Jun 22, 2021
 #2
avatar+121000 
+1

Area  between  = 

 

pi   (10^2  - 8^2)   =

 

36 pi  ≈   113.1    units^2  

 

 

cool cool cool

 Jun 22, 2021

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