If distance between the planes given by `vec(r) * ( hat(i) + 2 hat(j) -2 hat(k ) ) + 5 =0` and `vec(r) * ( hat(

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Q 2212178030.     If distance between the planes given by

`vec(r) * ( hat(i) + 2 hat(j) -2 hat(k ) ) + 5 =0` and

`vec(r) * ( hat(i) + 2 hat(j) - 2 hat(k) ) -8 = 0` is

`lambda`, then the value of `81 lambda` must be

HINT


Solution
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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