Use a calculator to find the missing side length. Tell whether the side lengths form a Pythagorean Triple.

Side lengths are 4.5 and 5.6.

Pythagorean theorem: a^2 + b^2 = c^2

The hypotenuse is always the c in the equation.

If the two side lengths they gave you are not the hypotenuse, then enter

4.5^2 + 5.6^2 in the calculator, then find the square root of that. : - )