Hi New member here! 1. The problem statement, all variables and given/known data In the figure one-fourth part of a uniform disc of radius R is shown. The distance of the center of mass of this object from center ‘O’ is ………………………. Given: For a semi-circular disc with origin of co- ordinate system at the center of circle, the coordinate of its center of mass is (0,4R/3π ). (Solve this problem without using calculus) 3. The attempt at a solution I tried for hours but could not find a solution without using calculus.