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How much square footage does a 60 inch round table?
2.1234
How many square centimeters are in an area of 3.10in squared?
(3.10 inch) squared = 9.61 square inches = 62 square centimeters (3.10 square inches) = 20 square centimeters. (both very slightly rounded)
What is 20 thousands in millimeters?
We assume you are referring to 20 thousands of an inch. 1 inch = 25.4mm so 20/1000 inch = 0.508 mm
How much air flow in cfm's comes from a typical 20 inch box fan?
~ 1000 cfm
How many 20x20x20 inch boxes does it take to cover 400 square feet?
Depends on the shape of the 400 square foot area, and how you are using the boxes to cover it. The area of one face of a 20 inch cube is 400 square inches. There are 144 square inches in a square foot. So if the area to be covered is rectangular, its the sides are multiples of 20 inches, you could place 144 of the boxes on that rectangle to cover it. If you are talking about cutting the boxes open and using all 6 faces, that's another story. 1/6 of 144 is 24, so 24 boxes opened up have a total area of 400 square feet, but unless you are allowed to cut the boxes further into 20 inch squares, it might be difficult to get them to fit together to cover any reasonably shaped 400 square foot area.
