Let the foot of perpendicular of the point P(3,-2,-9) on the plane passing through the points (-1, -2, -3), (9, 3, 4), (9, -2, 1) be Q(α, β, γ). Then…

Let the foot of perpendicular of the point $\displaystyle P(3,-2,-9)$ on the plane passing through the points (-$\displaystyle 1$, -$\displaystyle 2$, -$\displaystyle 3$), ($\displaystyle 9$, $\displaystyle 3$, $\displaystyle 4$), ($\displaystyle 9$, -$\displaystyle 2$, $\displaystyle 1$) be $\displaystyle Q(\alpha, \beta, \gamma)$. Then the distance of $\displaystyle Q$ from the origin is