Find the centre of mass of a uniform plate having semicircular inner and outer bundaries of radii `R_1 and R_2`.

Find the centre of mass of a uniform plate having semicircular inner and outer boundaries of radii R_1 and R_2 .

Find the centre of mass of a uniform plate having semicircular inner and outer boundaries of radii R_1 and R_2 .

Find the centre of mass of a uniform plate having semicircular inner and outer boundaries of radii R_1 and R_2 .

Find the centre of mass of a uniform plate having semicircular inner and outer boundaries of radii R_1 and R_2 .

Find the distance of centre of mass of a uniform plate having semicircular inner and other boundaries of radii a and b from the centre O.

Find the centre of mass of a uniform semicircular ring of radius R and mass M .

Find the centre of mass of a uniform semicircular ring of radius R and mass M .

Find the centre of mass of a homogeneous semicircular plate of radius a.

Find the location of centre of mass of a uniform semicirular plate of radius R and mass M .

Find the coordination of the centre of mass of a uniform semicircular wire of radius R and mass M.