Q. 45.0( 1 Vote )

Mark the co A. 1/2

B. 1/4

C. 1/6

D. none of these

Answer :

We know that, distance between two parallel planes:


Ax + By + Cz + D1=0…… (1) and Ax + By + Cz + D2=0…… (2) is given by,



Here, the two parallel planes are given as,


2x + 2y - z + 2=0 …………… (3)


and 4x + 4y - 2z + 5=0 i.e. 2x + 2y - z + =0 ………… (4)


Comparing equation (3) with equation (1) and equation (4) with equation (2) we get,


A=2, B=2, C= - 1, D1=2 and D2=.


So, the distance between the given two parallel planes are,








Hence, the distance between the parallel planes 2x + 2y - z + 2=0 and 4x + 4y - 6z + = is .

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