Answer:
AB ≈ 5.39
Explanation:
If you draw a line down from A, and another line left from B, the lines will intersect to form a right triangle with AB as the hypotenuse. You can use the Pythagorean theorem to find the length AB.
The vertical leg is 2 grid squares (units) long. The horizontal leg is 5 grid squares (units) long.
Then the hypotenuse, AB, is ...
AB = √(2² +5²) = √(4 +25) = √29
AB ≈ 5.39
The length of AB is about 5.39 units.