Answer: 52.77876 in
Explanation: C=2πr=2·π·8.4≈52.77876 in
Answer:
3.2
Step-by-step explanation:
The answer would be 16 3/4 divided by 3 7/8
Answer:

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Work Shown:

You could expand terms out and simplify, but I think it's more handy to leave it in this form so you can easily spot the center and radius from a glance.