Pythagorean Theorem

We all know that a baseball diamond is really a 90 foot square. So, if a catcher wanted to throw the ball to 2nd base, how far would he have to throw the ball? You know the dimensions of the square which is all you need to apply Pythagorean's Theorem. However, what if you don't know the measurement of the leg and you have the measurement of the hypotenuse? See next.