Pie and donuts

I ask (i slack) how to draw Pie and get a great answer.
Now i need a pie that not fill all the circle.
The pay need to be like donuts

Could you use a stroke? There are other ways too with a() and then mt() and then another a(), etc. For gaps you can add little arcs with a clear color...

Thanks! i dont like stroke becuse in small scale is Unexpected