The meter is an international unit of length, which is usually used to measure long distances or large objects. Centimeter is a smaller unit of length, which is usually used to measure smaller or shorter objects.

The conversion of length units, such as meters, centimeters and millimeters, is: 1 meter = 10 decimeter = 100 cm = 1000 mm. Height: It is more appropriate to use meters as the unit of length. For example, an adult with a height of 1.7 meters is 1.7 meters. Object size: For example, the size of a room is 5 meters long, 3 meters wide and 2 meters high.

Distance: When measuring distance, you can use meters as the unit of length, such as 2 kilometers from home to school, or you can use centimeters as the unit of length, such as 200,000 centimeters from home to school.

In a word, it is very important to use the appropriate length unit when measuring the length of an object. Usually in daily life and practical application, it is more appropriate to use meters or centimeters as the unit of length.

The function of ruler

1, measure the length with a ruler. Measuring the length with a ruler is the most common usage of a ruler.

2. The protractor measures the angle. A protractor is used to measure angles, usually for mathematical or physical measurement.

3. Draw a straight line with a ruler. Drawing a straight line with a ruler is one of the common uses of rulers, especially suitable for drawing charts or performing mathematical calculations.

4. Draw a curve with a ruler. Square is a flexible ruler, which is often used to draw curves or arcs.

5. When the knife cuts the paper. It is a common usage to cut paper with a ruler as a knife.