To find the area of a rectangle, you can use the formula:
Area = length × width
In this case, the school bulletin board is rectangular with a length ( l ) of 7 meters and a width ( w ) of 5 meters.
Using the formula:
Area = 7 × 5 = 35 square meters
Therefore, the area of the bulletin board is 35 square meters. This means the surface of the bulletin board covers 35 square meters of space.