Answer:
[tex]15.42mi[/tex]
Step-by-step explanation:
Use the formula for a semicircle's perimeter.
[tex]P=\frac{1}{2}\pi *d+d[/tex]
Plug in 6 for d.
[tex]P=\frac{1}{2}\pi*6+6[/tex]
Let's use 3.14 for [tex]\pi[/tex], just to make it easier, but of course, if it states to round it to something else, just plug in that many values for [tex]\pi[/tex].
[tex]P=\frac{1}{2}(3.14)*6+6 \\ \\ P=1.57*6+6 \\ \\ P=9.42+6 \\ \\ P=15.42[/tex]
