Answer:
1 mile
Step-by-step explanation:
The diameter is twice the radius, or
d = 2r
We know the diameter is 2, so we can substitute that in for d
2 =2r
We want to find r, so we need to solve for it. To do that, we need to get r by itself. r is being multiplied by 2. To undo this, divide both sides by 2, since division is the opposite of multiplication
2 / 2 = 2r / 2
The 2s on the right will cancel, and we are left with
1 = r
So, the radius is 1 mile
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