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12 mm. 12 mm.
Just over 0.25 inches.
The "mm" is the abbreviation for millimeters. So "12 mm" stands for "12 millimeters"
12 inches is equal to 304.8 mm.
If you have a length of 25 mm and then 12 mm it makes a length of 37 mm.
Betweeen 4 and 6 mm. The most common is probably 5 mm.
12 cm = 120 mm
12 ft = 3,657.6 mm
12 feet is 3,657.6 mm
Surface area of the ball = 4*pi*342 = 4624*pi square mm
The QVC 14k Choclate brown oval hoops are three mm. in diameter.
2.7 gram, 40 mm diameter. (introduced after the 2000 Olympic Games)earlier it was 38 mm. (40 mm table tennis ball is slower and spins less than a 38 mm one).Stars on the ball indicate the quality of the ball. 3 stars indicates that it is of the highest quality, and is used in official competitions.