Drill sizes are for 75% depth of thread. Metric tap and drill bit size table. Tap sizes are shown as hole size â threads per mm (millimeter). Example 6mm-1.0 = 6mm hole, 1 threads per mm.
How to find the area of a square: The area of a square can be found by multiplying the base times itself. This is similar to the area of a rectangle but the base is the same length as the height. If a square has a base of length 6 inches its area is 6*6=36 square inches.
When calculating sq in to sq ft divide the sq in by 144 to get sq ft. A sq foot is 12in by 12in or 144 sq in. So your 1 board example is 1.133 sq foot. to find out the entire room add up all the sq in then divide by 144 to give you the total sq ft. Donât forget to allow for waste, deduct 10 to 20%.