Question 33 0 / 4 pts The velocity of air flowing through a 3-inch duct is 500 ft/min (fpm). What is the air flow rate in ft³/min (cfm)? What is the velocity pressure at NTP?
Added by Belen R.
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The formula for the area of a circle is πr². The radius of a 3-inch duct is 1.5 inches, but we need to convert this to feet for our calculations. There are 12 inches in a foot, so the radius in feet is 1.5/12 = 0.125 feet. So, the cross-sectional area of the duct Show more…
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