30mm !
20%
3cm
there are a million things 3cm long like bugs, some bones in your fingers, a piece of string or paper cut to that length, etc.
if you have a box that is 9cm long and 3cm wide then you would say width + length + width + length because the side opposite from 3cm is also 3cm and the side opposite 9cm is also 9cm. so you would add: 9cm+9cm+3cm+3cm = 24cm if you have a box that is 9cm long and 3cm wide then you would say width + length + width + length because the side opposite from 3cm is also 3cm and the side opposite 9cm is also 9cm. so you would add: 9cm+9cm+3cm+3cm = 24cm
30mm !
3
30mm
1 cm = 10 mm ⇒ 3 cm = 3 x 10 mm = 30 mm
1 cm = 10 mm so 3 cm = 3*10 = 30 mm. Simple!
3 centimeters is approximately equal to 30 millimeters.
Well, There are 10 mm in 1 cm, so 10 times 30 is 300 300 mm are in 30 cm
30 mm equals 3 cm. To convert millimeters to centimeters, divide the number of millimeters by 10.
There are 2.54 cm in 1 inch and 10 mm in 1 cm. Therefore, 1.5 inches is equal to 3.81 cm and 38.1 mm.
1 cm = 10 mm so 3 cm = 3*10 = 30 mm. Simple!
14 mm/3 cm = 14 mm/30 mm = 14/30 = 7/15
20 mm, which is equal to 2 cm.