Answer:
Step-by-step explanation:

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I think I went down by 29 dollars and 76 cent
Answer:
x^4
Step-by-step explanation:
Act like it's a whole circle and find the perimeter, then divide by 2.
P = 2 * pi * r
P = 2 * 3.14 * 9
P = 56.52
Now divide by 2:
P = 28.26