1.

The area of the figure formed by the points (-1,-1,1);(1,1,1) and their mirror images on the plane 3x + 2y + 4z + 1 = 0 is

Answer» The area of the figure formed by the points (-1,-1,1);(1,1,1) and their mirror images on the plane 3x + 2y + 4z + 1 = 0 is


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