Find the distance between the parallel planes x +2y-2z +1= 0 and 2x + 4y - 4z+5=0.

Find the distance between the parallel planes x-2y-2z=3 and 2x-4y-4z=7 .

The distance between the planes x + 2y + 3z + 7 = 0 and 2x + 4y + 6z + 7 = 0 is

Distance between the parallel planes 2x+y+2z=8 and 4x+2y+4z+5=0 is

Find the angle between the two planes 3x - 6y + 2z =7 and 2x + 2y – 2z = 5.

Find the angle between the planes 2x – 3y + 4z= 1 and - x + y = 4

Find the equation of the plane containing the line of intersection of the planes x + y + z - 6 = 0 and 2x + 3y + 4z + 5 = 0 and passing through the point (1,1,1)

Find the acute angle between the planes 2x-3y+5z=1 and x-y-z=7 .

Distance between the two planes : 2x+3y+4z=4 and 4x+6y+8z=12 is