THE CENTROID 



211 



Also 

 Then 



a - - - 2-273 

 y-2-278* 1 - 137 



- V--- 3-126- 



Area A 



-i: 



y dx 



N 



a I x n 



J2 



2-273 



dx 



4,2.137 _ 22-137> 



2-137' 

 = 15-92 



Area B = 44 - 10 - 15-92 

 = 18-08 



For the area A, V ox = TT I y z dx 



J 2 

 f 4 



= Tea 2 x 2n 

 Ja 



TOT 



2n + 



2n+l I 

 J2 



TC(2-278) 2 2?4 _ 



8-274 t 

 415-9 



