need help find the diameter of each circles. Round your answer in the nearest tenth.

Given:
The radius of the circle is r=2 mi.
To find the diameter of the circle:
The formula is,
[tex]\begin{gathered} \text{Diameter, d}=2r \\ d=2\times2 \\ =4\text{ mi} \end{gathered}[/tex]Thus, the diameter of the circle is 4 mi.