4 cm
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4,000 millimeters=40 decimeters
1 decimeter = 100 millimeters, so 40 decimeters = 100 * 40 millimeters, or 4000.
A dime is approximately 1.35 millimeters thick. To convert this measurement to thousandths of an inch, you would multiply by 39.37 (since there are 25.4 millimeters in an inch). Therefore, a dime is about 53.15 thousandths of an inch thick.
Yes. Ten times bigger.
To convert centimeters to millimeters, you multiply by 10 since there are 10 millimeters in 1 centimeter. Therefore, 4 centimeters is equal to 40 millimeters (4 cm x 10 mm/cm = 40 mm).