The answer for this would be A. the radius
Area = length * width
A = 60 * 20
A = 120 square feet
-2.5, -1.1, -4/5, 0.8, 9/5
I would say none
because each one equals to 24 students, when it says there are 24 students in each are class. so you would need to do 24 * 5 to get the amount of students.