[FEATURE] Write simC code for question 112

[frankhart2018]

Question

Find the area of a circumcircle which passes through all the vertices of a square of side 9 units.

Where to put the code?

In simc-codes directory

What to name the file?

q112.simc

Note: You can only start doing a question if it has been assigned to you by a maintainer. Once assigned to someone this questions will not be reassigned, it can only be reassigned if the person does not complete his/her task."

[Chasmiccoder]

Can I work on this?

[Math-O5]

@Chasmiccoder Of course! (remember name branch in-<number-of-issue>)

[Chasmiccoder]

I have submitted the PR. (Also used the branch in-379)
Please check if that has been implemented properly.

[frankhart2018]

Merged.