The given figure shows a disc of radius `R=20 cm` with a portion of it removed symmetrically. The removed part is a disc, of radius `R / 2`. The removed part is now placed in contact with the larger disc as shown in the figure. The disc has uniform mass distribution. With respect to origin `O` at centre of larger disc, find `x` -coordinate (in cm ) of the centre of mass of system.
'(##CEN_KSR_PHY_JEE_C08_E01_011_Q07##)'

Answer

5