The standard ordinary classroom area is 70 to 90 square meters. Different types of classrooms have different sizes. For example, the area of a large multimedia classroom can reach 300 square meters.

The classroom is where the teacher gives lessons to the students. This is a big room with a podium in front and seats in the back. There is a blackboard or whiteboard on the wall near the podium, which is where teachers give lectures and assign homework. At the back are the students' seats. In China, there are generally four groups of desks in primary and secondary schools, with eight to nine desks in each group and two students in each table.

Brief introduction of area formula:

1, trapezoidal area = (upper bottom) × height ÷2.

2. Area of triangle = base × height ÷2.

3. Area of a square = side length × side length.

4. The S side of the conical profile = π rl = (nπ l? )/360。

5. Surface area of cylinder = area of upper and lower bottom surfaces+area of side surfaces.