The formula of an area of a circle:

r - a radius
We have r = 14m. Substitute:

If you want an approximate area, you can accept 
Then:

60v = $15
60v/60 = $15/60
v = 0.25
The original value of the baseball card is $0.25
Answer:
2 cups of blueberry
Step-by-step explanation:
8/4=2