Wish I could pit a Radius on corners of squares

[berainlb (PY)]

OR, for some levity and if you wanted to make this really hard on yourself and combine the 2 different parts of this question you could:

1. draw square
2. convert square to path
3. draw circle of desired rounded curve size
4. convert circle to path
5. align circle to corner of square (see Figure A)
6. trim out right corner to reveal rounded circle (see Figure B)
7. remove rest of unnecessary circle
8. auto-join rounded corner arc to rest of square (See Figure C)
9. Et voila! Easy peasy.

Now the only dilemma is which method to pick. Choices choices…

Figure A

Figure B

Figure C