How to solve this question?

The floor plan of a room has a scale of 2.5 in.: 35 ft. in the drawing, the length of the room is 8 in. and the width of the room is 6 in. what is the perimeter of the actual room?

How can constraints be used to model a real-world situation?

Type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar.