A chalkboard is about 80 centimeters long, right?

The blackboard should be more than 80 centimeters, it should be 80 centimeters wide, because for the blackboard, it should be two or three meters hidden.

Yes, the length of the blackboard is generally 65-80

No, this centimeter is not a problem, but the wrong one is 80 centimeters, and the length of a normal blackboard is about 300 centimeters to 400 centimeters.

A blackboard is about 80 centimeters long, which is correct, and this unit of quantity also corresponds to the length of the blackboard, but it is a relatively small blackboard.

The statement that a chalkboard is about eighty centimeters long is false. Because the length of the blackboard is as short as two meters, and the width is about one meter five.

Generally we describe a chalkboard as the height and width of the chalkboard. Sometimes it's too wide, so we also say it's growing. And a chalkboard about 80 cm long is usually a small chalkboard. That is, the teacher can directly refer to the blackboard in the classroom from the office.

Hello, a blackboard is about 80 centimeters long, and the length of a normal blackboard is 80 centimeters.

It must be wrong, because the school blackboard can't be only 80 centimeters long, you should write 80 decimeters.

One blackboard is about 80 centimeters, right? It should be 80 decimeters, that is to say, 8 meters, an 8-meter blackboard is still possible, an 80-centimeter blackboard is impossible.

A blackboard is about 80 centimeters long, which I think should be correct, because if you fill in decimeters and meters in addition to centimeters, then this blackboard must be the same as our actual blackboard.

It is not correct that the blackboard is about 80cm long, and the blackboard used by teachers in class is usually about three meters long.

It is not correct that the length of a blackboard is about 80cm, and the correct answer should be 80 decimeters.

A blackboard is about 200 centimeters long, and 80 centimeters is too short.

It shouldn't be right, it should be 80 centimeters high, 80 centimeters long is too short, but some blackboards are only that big.

A blackboard is about 80 centimeters long, which is right, which means that he is about a meter or so.

This blackboard, if it is a small family blackboard, is 80 cm long, but it is a bit small.

The blackboard is about 80cm long, and there is no right or wrong about this, because the blackboard is large and small, and if the classroom is a little smaller than this blackboard, this can be the kind of home.

One blackboard is about 80 centimeters long, and 80 centimeters is the small blackboard that we use.

A blackboard is about 80 centimeters long, this is okay if it is a small blackboard, if it is a large blackboard school, then it is not right, how can there be such a short one? He's at least a few meters long.

Of course, this statement is not true, it should be 80 decimeters.

This is not the case at all, and the main reason is that it should be longer than that, but it is entirely possible with a small blackboard.

If it's a four-piece blackboard, one is about 80 centimeters.

If it's a small blackboard, it's fine.

A blackboard is about 80 centimeters long, and there are also such ones.

It's a fist that grows sooner or later, right, right, that's right, there's some clear way.

It is correct that the blackboard is 20 decimeters long, and 20 decimeters is 2 meters.

Chalkboard does not refer specifically to black surfaces.

Traditionally, it is a flat surface that can be written repeatedly with chalk, and the surface of the board is hard and is mostly used for teaching.

Blackboards are generally made of wood or frosted glass, etc., and can be written on with specific writing materials such as chalk. It is mostly black, dark green, white or beige.

Blackboard newspaper

The blackboard newspaper is Gao Xiang's fixed or moving blackboard as the carrier, with the first pen or advertising pigment as the popular propaganda position of writing and painting tools, with the advantages of easy scrubbing, modification and replacement, it is the most economical, most convenient and most common form of propaganda, which is widely used in primary and secondary schools, troops, colleges and universities, factories and mining enterprises and institutions.

The blackboard newspaper must have a definite theme, (e.g., festivals, events, etc.) with a large header to highlight the theme, at least five pages, and illustrations. It can be handwritten or clip art.

That's right, because 20decimetersIt's equal to 2 meters, and the length of the chalkboard is about 2 meters.

The decimeter (decimetre) is the International System of Units.

The unit of length, abbreviated as DM. The decimeter is located between centimeters and meters. 10 centimeters is equivalent to 1 decimeter, and 10 decimeters is equivalent to 1 meter. The International System of Units (SI) has chosen seven quantities that are independent of each other as the basic quantities, and the first land limb is length, its basic unit.

The name is m, and the English abbreviation of sleepy high is m.

Conversion relationships. Kilometers (km) = 1 decimeter (dm).

Meters (m) = 1 decimeter (dm).

10 centimeters (cm) = 1 decimeter (dm).

100 millimeters (mm) = 1 decimeter (dm).

10 decimeters (dm) = 1 meter (m).

Minutes of the first meter (dm) = 1 centimeter (cm).

Decimeter (dm) = 1 millimeter (mm).

10,000 decimeters (dm) = 1 kilometer (km).

A blackboard can't be 28 meters, because the room can't fit it, so it can only be 28 centimeters.

The basic unit of distance is the basic unit formulated by human beings in order to regulate length.

Its SI unit is "meter" (symbol "m"), and the commonly used units are millimeters (mm), centimeters (cm), decimeters (dm), kilometers (km), meters (m), micrometers (m), nanometers (nm), and so on. Units of length play an important role in various fields.

28 meters is equivalent to the height of a 10-story building.

28 centimeters is a little longer than a 20 centimeter ruler, so both units should be 28 decimeters.

28 points = meters.

The blackboard design should comply with the following regulations:

1. Blackboard size: height should not be less than 1000mm, width: primary school should not be less than 3600mm, middle school should not be less than 4000mm.

2. The vertical distance between the lower edge of the blackboard and the podium: 800-900mm for primary schools; Secondary schools should be 1000-1100mm.

3. The surface of the blackboard should be made of wear-resistant and matte materials.

Article 1 The horizontal distance between the two ends of the podium and the edge of the blackboard should not be less than 200mm, the width should not be less than 650mm, and the height should be 200mm.

A chalkboard is about 4 meters long;

Xiaoli's height is about 1.62 meters

So the answer is: meters, meters, centimeters

b According to life experience, the unit of area and the size of the data, it can be known that the area of the cover of the measurement mathematics textbook should be 4 square decimeters, and the solution is accordingly: the area of the cover of the mathematics textbook is about 4 square decimeters, so choose: b.