Given a right triangle with a side length of 4 and a Hypotenuse of 5, calculate the remaining side:

The Pythagorean Theorem is shown below: Side1^{2} + Side2^{2} = Hypotenuse^{2} This is also written as a^{2} + b^{2} = c^{2} where c is the hypotenuse.

Solving for Side 1 by isolating it and taking the square root of both sides, we get: Side 1 = √Hypotenuse^{2} - Side 2^{2}

Plugging in our Hypotenuse and Side 2, we get Side 1 = √5^{2} - 4^{2} Side 1 = √25 - 16 Side 1 = √9 Side 1 = 3