I`m searching for solution how to arc these flags
into this shape in adobe illustrator
Thanks for solution.
Select your flag then go to
effect > warp > arc
From there, you can edit the amount of bend as well.
Place the shape you need as a path above the flags in the stacking order. Select the flags and the shape. Then choose Object > Envelope Distort > Make with Top Object
from the menu.
:)
There's a few possibilities if the flags are vector.. I just used the raster image in the question as a quick example.
Manually draw circles using Path > Offset path and create a three layer circle if the flag has three layers. Then make this shape you mentioned (segment of the circle) and a clipping mask with it.