Millimeters in 1 foot?
1 foot (12 inches/1 foot)(2.54 centimeters/1 inch)
= 30.48 centimeters * 10
= 304.8 mm
about 500 million to 1 billion
20
20mm
60 mm = 6 cm
10
340mm
3.8cm
1 cm = 10 mm therefore the shelf is 450mm 450mm/9mm = 50 books
10 mm = 1cm 1 in = 2.54 cm 1 in = 25.4 mm
1 mm = 1000 um
1 inch is how many mm?
1 mm = .1 cm