Answer:
28.2
Step-by-step explanation:
radius of semicircle=(4/2) = 2
circumference of circle=
[tex]2\pi \:r[/tex]
[tex]circumference \: of \: semicircle = 0.5 \times 2\pi \:r[/tex]
perimeter=9+9+2pi+4
=28.2
