Answer:
13.
π
14.
π
15. 
Step-by-step explanation:
13.
A = π * 
r =
A = π* 
A = π * 
A = π * 
A =
π
14.
V = π *
* h
r = 
h = 
V = π *
* 
V = π *
* 
V = π * 
V =
π
15.
= 








Hope this helps!
Answer:
So in the past month Rita earned $18.50
Step-by-step explanation:
2.50 x 6 = 15
3.50 x 1 = 3.50
The answer and work is shown by the picture given.