Answer:
28.26
Step-by-step explanation:
Area of a circle = pi (radius)^2 so...
A=3.14(9) = 28.26, which is your first choice
Mrs. Brown's class will earn 30 minutes of recess.
So 300b=15 min, in an hour (15x4) 1200 boxes will be made (300x4)
so 1200 boxes per hour
