The distance of the point (1,−2,4) from the plane passing through the point (1,2,2) and perpendicular to the planes x−y+2z=3 and 2x−2y+z+12=0 is :
A plane passes through (1, -2, 1) and is perpendicular to two planes 2x−2y+z=0 and x−y+2z=4, then the distance of the plane form the point (1, 2, 2) is