Answer:
The length of segment AB is 5.
Step-by-step explanation:
If you use the Pythagorean theorem, you would find that the answer is 5.
One side of the triangle is a length of 4. The last side is a length of 3.
a^2+b^2=c^2
4^2+3^2=c^2
16+9=25
The square root of 25 is 5.
