There is no formula for this - the units don't work. On one side you have time (milliseconds) but on the other you have speed=distance/time (feet/minute).
Use this formula: miles per hour x 88 = feet per minute
Here it is: cubic feet x 7.481 = US gallons
1 cubic foot = 1728 cubic inches whether for a round type tree or anything else.
1 [mi/h] = 5280 [ft / h] = 5280 [ft] / 60 [min] = 88 [ft / min]
108.2677165 ft Direct Conversion Formula 33 m* 1 ft 0.3048 m = 108.2677165 ft
feet = cms ÷ 30.48
Feet divided by 5,280 = miles
3 feet equal 1 yard
Here it is: miles x 5,280 = feet
Multiply km by 3280.84
1 nautical mile = 6076.12 feet.
1 foot = 30.48 cm
1.1442192 kilometers.the formula is: divide the number of feet by 3280.84 to get the number of kilometers.
You need to know the area of the pipe or duct. If you have that area, in square feet, V = Q/A where V = velocity (ft/minute in this case), Q = flowrate (cubic feet/minute in ths case), and A = area (square feet in this case). Then, you just have to apply conversions to get whatever units you want to present or use the answer in.
Square inches x 0.00694 = square feet
Square inches x 0.00694444 = square feet
You can use 1 foot = 304.8 millimeters