A Wireframe is made of a wire or uniform crosssection. which is shown in figure ABC. HGF and DIE are semicircular arcs of redius r. CD=DO=OE=EF=r and 'O' is the centre of circle. Then centre of mass of frame is:

Options

A. At distance `((2r)/(3pi+4))` towards left of O
B. At distance `((2r)/(3pi+4))` towards right of O
C. At distance `((4r)/(3pi+4))` towards left of O
D. At distance `((4r)/(3pi+4))` towards right of O

Answer

A