I would say:

• $C$ is the midpoint of $\overline{AB}$
• $\overline{CD}$ is perpendicular to $\overline{AB}$
• $\overline{CF}$ is perpendicular to $\overline{AD}$

These three are sufficent to draw the figure. (Apart of course from $D$ and $F$ are on the semicircles)

Or you just do the math to compute this formula.

Approved Haskell fork. Thx.

Fixed for C.

Please randomize the order of the inputs and try to cut them down a bit. Currently it does 100 tests per input, resulting in 25600 tests overall.

Fixed for Python.

Full tests should test each "relevant" input at least once. (all languages)

This is a server problem. Just try again later.

It puts the null terminator at the end of both strings.

Added in Crystal and Ruby.

Please add fixed tests with edge cases (see other languages)

Please add fixed tests for edge cases (see other languages).

Please add the sample tests as fixed tests to the full test suite and also tests with edge cases (see other languages).

A function can only return one value. As soon as "Underweight" is returned the functions stops executing and the statements further down are not evaluated.

I added edge cases to Java, JavaScript, TypeScript, Ruby, Crystal, Python, C, C++, C#, PHP, and Haskell.