Answer:
x = √89
Explanation:
To find the 3rd side of any triangle using the other 2 known sides is simple.
First you want to identify the hypotenuse. It will be the longest side, opposite of the largest angle. The hypotenuse will represent c in the Pythagorean Theorem equation: a² + b² = c²
a and b will represent the other two sides.
When solving, I am assuming that the given sides are not the hypotenuse because it is unclear.
5² + 8² = √89