You use a ruler or similar object that is marked with centimeters. If your ruler only has inches, measure the inches, then multiply with 2.54 to get centimeters.
30 centimeters 30 centimeters
If the lines are on the opposite side of the inches on the ruler, then yes. You must keep in mind, however, that a ruler is used for inches and that the centimeters may not be marked.
you read a ruler by conting the little lines first
the aleks ruler can measure what ever it wants, including centimeters, because it is the ruler.
Most rulers are either 30 centimeters or 1 meter long. A standard meter ruler has 100 centimeters, not 36.
A standard ruler is typically 30 centimeters long, which is equal to 300 millimeters. So there are 300 millimeters in a typical ruler.
13 inches are 33.02 centimeters.
A standard metric ruler is just slightly longer than 30 centimetres and slightly longer than 12 inches.The "slightly longer" is for the extra bits of ruler that stick out in front of the 0 (zero) cm/in at the beginning of the ruler and behind the 30 cm/12 in mark at the end of the ruler
On a standard ruler, 3.9 inches would be equivalent to 9.906 centimeters. This conversion is based on the fact that 1 inch is equal to 2.54 centimeters. Therefore, to convert inches to centimeters, you would multiply the number of inches by 2.54.
A metric ruler is not a fixed length. A school ruler is normally 12 inches and this would be 30 cm, but I have a workshop ruler that is 60 cm, and you can buy longer ones. The thing to remember is that 1 inch = 2.54 cm
The units of length on a ruler are typically in inches and centimeters. Each inch is divided into smaller units, such as eighths or sixteenths, while centimeters are divided into smaller units called millimeters.
To use a ruler, place the 0 mark at one end of the object you want to measure. Then, read the measurement at the opposite end where it aligns with the ruler markings. Make sure to use the correct units (inches, centimeters, etc.) as indicated on the ruler.
The customary ruler uses both inches and centimeters.
A line on a ruler represents one unit of measurement, such as an inch or a centimeter. The actual length of a line on a ruler will depend on the scale of the ruler, such as whether it is in inches, centimeters, or millimeters.
a 30cm ruler
You use a ruler or similar object that is marked with centimeters. If your ruler only has inches, measure the inches, then multiply with 2.54 to get centimeters.