8 feet
12 feet
about 2 metres
The typical door in a classroom is about 2 meters, or two yards and 1/3.
In the sentence "Wait by the classroom door," the simple subject is the implied "you," as the command is directed at the listener. The simple predicate is "wait," which indicates the action being requested.
It is possible to hear a teacher through a closed classroom door if the teacher is speaking loudly or if the door is not soundproof. The ability to hear through a closed door also depends on the thickness and material of the door.
Thickness of door is not measured in km. Kilometer is a big quantity.
The thickness of a standard European door is about 33 inches (919mm).plissescreen.com
through the door
classroom door knobs
the sentence is incompletely. the subject is missing.
8 feet
the smallest average door
classroom door knobs
12 feet
about 2 metres
about six "feet