The given question is incomplete. The complete question is attached with an image below.
Explanation:
Mass flow rate through region A will be calculated as follows.
Rate = [tex]\rho \times A \times \mu[/tex]
= [tex]\rho \times \pi \times R^{2} \times \mu[/tex]
= [tex]1025 \times 3.14 \times (0.5 \times 10^{-2})^{2} \times 30 \times 10^{-2}[/tex]
= [tex]24138.75 \times 10^{6} kg/s[/tex]
Therefore, we can conclude that the mass flow rate through region A is [tex]24138.75 \times 10^{6} kg/s[/tex].
