A variable plane at a distance of 1 unit from the origin cuts the co-ordinate axes at A,B a....

A variable plane at a distance of 1 unit from the origin cuts the co-ordinate axes at A,B and C. If the centroid D(x,y,z) of triangle ABC satisfies the relation 1x2+1y2+1z2=k, then the value of k is 📲PW App Link - https://bit.ly/YTAI_PWAP 🌐PW Website - https://www.pw.live