Find moment of inertia of half disc of radius `R_2` and mass `M` about its centre. A smaller half disc of radius `R_1` is cut from this disc

Options

A. `M/4 (R_(1)^(2)+R_(2)^(2))`
B. `M/8(R_(1)^(2)+R_(2)^(2))`
C. `M/16(R_(1)^(2)+R_(2)^(2))`
D. `M/32(R_(1)^(2)+R_(2)^(2))`

Answer

A

Explanation

`I=I_("total")-I'`