Need help fast plz if possible show work
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Answer:
12.4949707813 MPH ( it might want you to round, which then of course would be 12.5 MPH.
Step-by-step explanation:
You need to take the number 20 (the diameter) and multiply it by pi. You then get 62.8318530718. You need to multiply that by 3.5, which then gets 219.911485751.