Is 0.2222222 rational

If you mean that the sequence of 2s continues indefinitely, then of course it’s rational. It’s exactly equal to 2/9, a ratio of two integers.

It’s not possible for a number to be both rational and irrational, or for a real number to be neither rational nor irrational.

Step-by-step explanation:

52 cm

Step-by-step explanation:

20^2 + 48^2 = x^2

400 + 2304 = x^2

2704 = x^2

x = 52