The conversion factor is 25.4mm per inch.
so, multiply your inch dimension by 25.4 and that is your answer in millimeters.
-----> 3.75 inches x 25.4 = 95.25mm
-----> 7 inches x 25.4 = 177.8mm
compare it with cm .....mm x 10 cm
You find a tape measure and take the measurement across the door, then the length of it, then if necessary the thickness.
Are you sure it won't strain your brain?
The answer depends on the tape measure. It is quite likely it is 375 centimetres = 3.75 metres, but it is not possible to be sure.
To measure (for example) a 2 metre long plank of wood: Place the tang at one end of the plank, stretch out the tape along the plank's length, read off the measurement at the other end of the plank. In our example, the tape should read 2 metres.
compare it with cm .....mm x 10 cm
A ruler or tape measure.
You probably mean the width of a cassette tape!
25.4 mm = 1 inch18.5 mm = 0.728 inch (rounded)
No. The smallest division on a tape measure is normally a millimetre. So you can see what 4 mm looks like and what 5 mm looks like but you can only make an informed guess at 4.5 mm.
Are you sure it won't strain your brain?
You find a tape measure and take the measurement across the door, then the length of it, then if necessary the thickness.
The answer depends on the tape measure. It is quite likely it is 375 centimetres = 3.75 metres, but it is not possible to be sure.
take a can and put paper around it then tape it up then measure it in mm
34 millimeters is equivalent to 3.4 centimeters or 0.034 meters
It is a length of 1.9 centimetres.
To measure (for example) a 2 metre long plank of wood: Place the tang at one end of the plank, stretch out the tape along the plank's length, read off the measurement at the other end of the plank. In our example, the tape should read 2 metres.