The distance between the parallel planes $2x- y + 2z + 3 = 0 $ and $4x - 2y + 4z + 5 = 0 $is
Answer & explanation
Correct answer: option 2
The equations of two planes are $2x- y + 2z + 3 = 0 $ and $2x - y + 2z +\frac{5}{2}= 0.$
∴ Required distance $= \frac{|3-\frac{5}{2}|}{\sqrt{4+1 + 4}}= \frac{1}{6}$