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The plane denoted by P:4x+7y+4z+81=0 is rotated through a right angle about its line of intersection with the plane P2:5x+3y+10z=25. If the plane in its new position be denoted by P1, and the distance of this plane from the origin is d, then the value of [d2] is ( where [k], k∈R represents the greatest integer less than or equal to k)

Answer» The plane denoted by P:4x+7y+4z+81=0 is rotated through a right angle about its line of intersection with the plane P2:5x+3y+10z=25. If the plane in its new position be denoted by P1, and the distance of this plane from the origin is d, then the value of [d2] is ( where [k], kR represents the greatest integer less than or equal to k)


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