The coordinates of centre of mass of a uniform flag shaped lamina (thin flat plate) of mass 4 kg. (The coordinates of the same are shown in figure) are :

Coordinates of two shaded parts having equal area and mass are 0.5 , 1 and1 , 2.5​In vector form, r→cm=m1r1^+m2r2^m1+m2​⇒r→cm=2×i∧2+j∧+2×i∧+5j∧24   ⇒ r→cm=34i∧+74j∧​Hence coordinates of COM is 0.75 , 1.75