Answer:
22 Nah I'm kidding, it's 4
Step-by-step explanation:
This was fun
4.

5.

doesn't belong with the other three because it is irrational number
The other three can be expressed as a ratio between two <span>integers.

</span>
Hello Croary
We would first need to subtract 13.09cm from 21.59cm which will be 8.5cm, with the left over space, divide in half
<u><em>8.5/2 = 4.25cm</em></u>
:)