1 cm = 10 mm so 3 cm = 3*10 = 30 mm. Simple!
3
3 centimeters is approximately equal to 30 millimeters.
3cm = 3 x 10 = 30 mm
30mm !
1 cm = 10 mm so 3 cm = 3*10 = 30 mm. Simple!
30mm converts to 3cm. Divide mm by 10 to get cm
3cm 8.1mm
3cmsmetric system works in 10s 100s or 1000s here is a rough overview10 mm equals 1 centimetre100 centimetre equals 1 metre also 1000 millimetres equals 1 metre1000 metres equals a kilometrethe metric system also works on volume as well 1 cubic metre equals 1000 litres10 cms cubed is 1 litre3 cm.
30mm
1 cm = 10 mm ⇒ 3 cm = 3 x 10 mm = 30 mm
Multiply it by 10 !
About 1.2 inches. 30mm=3cm