The total students the principal expect to fit in the gym in case of an emergency is 1680 students
Area of a rectangle
If the floor of a school gymnasium is 84 feet long and 50 feet wide, then the area of the floor is expressed as;
Area= 50 * 84
Area = 4200 square feet
If the expected floor space a standing person occupies is about 2.5 sq feet, hence;
Total student = 4200/2.5
Total student = 1680 students
Hence the total students the principal expect to fit in the gym in case of an emergency is 1680 students
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