The AEROLAB wind tunnel has a room-inlet cross-sectional area to test-throat cross-sectional area of 1.1 m by 1.1 m down to 0.305 m by 0.305 m. A) What is the inlet to throat cross-sectional area ratio? B) A mercury manometer is connected between the inlet-section and model test-section showing a height difference of 12.0 cm of mercury (Hg density 1.36 x 10^4 kg/m^3). Calculate the air wind speed in the test section. C) Why is the inlet location (volume) labeled the "settling area"? How does that affect your assumptions used in the calculation in part B?