The exercise is solved by applying the Pythagorean Theorem:
h^2= a^2 + b^2 ⇒ h= √(a^2 + b^2)
h: hypotenuse (the opposite side of the right angle and the longest side of the triangle).
a and b: legs (the sides that form the right angle).
Let's proceed to find it the length QR by applying the Pythagorean equation:
h^2= a^2 + b^2
h= QR=√ ((8√3)² + 8²)
QR=16
The answer is: The length QR is 16