Formula : The distance between two parallel planes, say

Plane 1:ax + by + cz + d1 = 0 &

Plane 2:ax + by + cz + d2 = 0 is given by the formula

where () are constants of the planes

Therefore ,

First Plane 2x + 3y + 4 = 4

2x + 3y + 4 – 4 = 0 …… (1)

Second plane 4x + 6y + 8z = 12

4x + 6y + 8z - 12 = 0

2(2x + 3y + 4z – 6) = 0

2x + 3y + 4z – 6 = 0 …… (2)

Using equation (1) and (2)

Distance between both planes