.. Getting the long hose

Cut it where you can reach. Use the knife (Knife can be found where you started. Talk to it.) while standing next to the pipe and you get a smaller pipe.

Use the small tube to combine the pipes in the halved machine parts. The computer will tell you what happens when you try the combinations.

Yes, you can open up three panels by connecting the pipes.

One of the panels would probably catch you if you fall from the top.

The panel 36. You get it by connecting the hose to the two bottom pipes in the right half.

Now, just climb up the hose and cut it with the knife. The panel will catch you.