29
270 inches square
60 inches.
"Next to the teacher's big desk" does not contain a verb.
The use for a teacher's desk is to hold papers, paperclips, markers ect. Think of it this way, if a student has a desk, why shouldn't a teacher?
15in
An "apple" if it's a teacher's desk. Or an Abbicus if the desk is somewhere in asia!
The standard width of a school desk is 36 inches. Such a desk will also have an average length of 22 inches.
The average computer desk is 24 inches wide, 30 inches high and 24 inches deep.
There is no standard desk size. The size of the desk can vary from educational establishment to educational establishment and from room to room in an educational establishment. At the adult education centre where I volunteer as an assistant, the teacher's desk is computer desk of about 2ft by 3 ft. Schools tend to use a larger desk of about 2ft by 6 ft, or 3 ft by 8 ft. In a science lab, the teacher's desk can be a "science bench" 10 ft or more long and 2-3 ft wide.
42x24=1008
If you want to say the teacher's desk in spanish you would say el escritorio.
"Teacher's desk" in English means cattedra in Italian.