Answer :
I drew it out for you, and it is attached :)
The full black circle means the whole circle is shaded, and I made it red for the other one so you could notice that only 2/7 is shaded :)
The full black circle means the whole circle is shaded, and I made it red for the other one so you could notice that only 2/7 is shaded :)
![View image TSO](https://us-static.z-dn.net/files/d3d/27f386474b1badd1ff5500753a4fb55e.png)