So to figure out what h is, we can just use the Pythagorean theorem. We would have h squared plus s over 2 squared is going to be equal to the hypotenuse squared. It is going to be equal to s squared. So you would get h squared plus s squared over 4 is equal to s squared. Subtract s squared over 4 from both sides, and you get h squared is equal to s squared minus s squared over 4. Now, to do this, I could call s squared. I could call this 4s squared over 4, just to be able to have a common denominator.