A millimetre is a unit of measurement of length. A diameter is not. The question, therefore, makes no sense.
Radius = 1/2 of the diameter = 328/2 = 164 millimeters
30.4mm
There is 250 millimeters in 1 litter.
1 foot is 304.8 millimeters.
914.4 millimeters
Raindrops can vary in size, but on average they are about 1 to 2 millimeters in diameter. Some larger raindrops may be 4 to 6 millimeters in diameter, while smaller raindrops can be less than 1 millimeter in diameter.
21.21 millimeters wide
The average diameter of a toothpick is about 2 millimeters.
(1,000)/(diameter of one M in millimeters)
30.4mm
20 millimeters
There is 250 millimeters in 1 litter.
1 foot is 304.8 millimeters.
The average diameter of a single strand of hair is about 0.02 to 0.04 millimeters for fine hair, and 0.04 to 0.08 millimeters for coarse hair.
1 million millimeters
1 dekameter = 10 000 millimeters
Mercury's diameter is approximately 4,880 kilometers, or 4,880,000 meters. Converted to millimeters, this diameter would be 4,880,000,000 millimeters.