SOLUTION: what is the diameter of a circle with an area of 3.9 miles squared?

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Question 597348: what is the diameter of a circle with an area of 3.9 miles squared?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
what is the diameter of a circle with an area of 3.9 miles squared?
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Area+=+pi%2Ar%5E2+=+3.9
d = 2r