[Mathematica] Schematic figure using Graphics

[Ref] ref/Disk (mathematica의 disk reference)

Graphics[{{EdgeForm[Thick], White, Disk[]}, Yellow, EdgeForm[Thick],  Disk[{0, 0}, 1, {Pi/2, -Pi/2}]}]

Graphics[{Yellow, Disk[{0, 0}, 0.5], Black, Disk[{0, 0}, 0.3] }]

Graphics[{EdgeForm[Thick], Yellow, Disk[{0, 0}, 0.5]}]