What is the length of slide AB?

(AC length: 4)
(CB length: 2)

To find the length of slide AB, you can use the Pythagorean theorem since triangle ABC is a right triangle.

AB^2 = AC^2 + CB^2
AB^2 = 4^2 + 2^2
AB^2 = 16 + 4
AB^2 = 20
AB = √20
AB = 4.47

So, the length of slide AB is approximately 4.47.