Find the moment of inertia ix of particle a with respect to the x axis (that is, if the x axis is the axis of rotation), the moment of inertia iy of particle a with respect to the y axis, and the moment of inertia iz of particle a with respect to the z axis (the axis that passes through the origin perpendicular to both the x and y axes). express your answers in terms of m and r separated by commas.