409,821,735,673.....the value of the 4 in this number is 400 billion
Answer:
5/8 * pi r^2
Step-by-step explanation:
First , you find the full area of the circle
A = pi r^2
Then multiply by the fraction that you want to find
5/8 * pi r^2
About 18 or 19 students per teacher
It is simplified as much as it can go.
