Answer:
4[tex]\sqrt{73}[/tex] units
Step-by-step explanation:
The given shape is a right triangle and in right triangles the sum of square length of legs is equal to square length of hypotenuse (represented with x in here):
12^2 + 32^2 = x^2
1168 = x^2 find the root for both sides
4[tex]\sqrt{73}[/tex] =x