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### Question Asked by a Student from EXXAMM.com Team

** Q 1317012889. ** The distance between the parallel planes `2x+3y+4z=5` and `4x+6y+8z=12` is ?

#### HINT

The distance between two parallel planes
`ax+by+cz+d_1=0` and `ax+by+cz+d_2=0` is
given by `| frac{d_1-d_2}{sqrt {a^2+b^2+c^2}}|`