Use a=

r^2 (r represents your radius of 4 feet)

(4^2)
Answer = 16

^2
428,731 - 175,842 = 252,889
Answer:
I believe there are 70 students in the theater!
Step-by-step explanation:
In the ratio 2:3 going to 28:? there is a pattern. You multiply 2 by 14 to get to 28, so if you multiply 3 by 14 you get 42. Add 42 to 28 for the total amount of students in class!
Have a nice night!