Answer:
The diameter is approximately 3.8 mi
Explanation:
The circumference formula is C = πd. Dividing both sides by π results in a formula for d (diameter) when C is known:
d = C / π
In this case, with C = 12 mi,
d = 12 mi / π, or approximately 3.8 mi
To find the diameter of a circle, using only the circumference, you need to divide the circumference by π, or 3.14.
So in this case, you must divide 12 by 3.14, which gives you 3.82.
I even double checked this, and should be correct then.
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