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The distance between the parallel planes...

The distance between the parallel planes `x+2y-2z-1=0 and 2x+4y-4z+5=0` is __

A

1 unit

B

`(6)/(7)` units

C

`(7)/(6)` units

D

`(5)/(7)` units

Text Solution

Verified by Experts

The correct Answer is:
C
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