+0  
 
+2
95
3
avatar+266 

Please help.

 


 Mar 28, 2020
 #1
avatar+111330 
+2

Note  that the  area  of  the red region is  just the area  of the larger circle - area of the smaler circle  = 

 

(8.01^2 - 4.02^2) pi  

 

So.....the probability  that  a point fals into the red  area  =  

 

red area  /  area of large circle  =     

 

(8.01^2 - 4.02^2) pi                 8.01^2  - 4.02^2

________________  =          ______________   ≈   .748 =   74.8  % 

     8.01^2 pi                                 8.01^2

 

 

 

 

cool cool cool

 Mar 28, 2020
edited by CPhill  Mar 28, 2020
 #2
avatar+266 
+3

Thank you CPhill

Mathisgood  Mar 28, 2020
 #3
avatar+111330 
+1

OK, Mathisgood   !!!

 

cool cool cool

CPhill  Mar 28, 2020

7 Online Users

avatar
avatar