Given a right triangle with a side length of 3 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 2 by isolating it and taking the square root of both sides, we get: Side 2 = √Hypotenuse^{2} - Side 1^{2}

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