The flux of $\vec F$ out of a small sphere of radius $0.05$ centered at $(3, 1, 4)$, is $0.025$. Estimate:

(a) $\mbox{div } \vec F$ at $(3, 1, 4)$:
$\mbox{div } \vec F \approx$

(b) The flux of $\vec F$ out of a sphere of radius $0.1$ centered at $(3, 1, 4)$.
flux $\approx$