3d Geometry

Let \(\mathrm{P}(\alpha, \beta, \gamma)\) be the image of the point \(\mathrm{Q}(3,-3,1)\) in the line \(\frac{x-0}{1}=\frac{y-3}{1}=\frac{z-1}{-1}\) and \(\mathrm{R}\) be the point \((2,5,-1)\). If the area of the triangle \(\mathrm{PQR}\) is \(\lambda\) and \(\lambda^2=14 \mathrm{~K}\), then \(\mathrm{K}\) is equal to :