I can't tell you how long your skis should be just based on your height. Type of skis and skill level can greatly affect how long your skis should be. If you are a beginner your skis should between your chin and nose. If you are intermediate your skis should be between your nose and eyes. If you are an expert the ski should be above your eyes but no longer than your height. If you are buying twin tips you should add around 5cm to the length of the skis, thus being one of the exceptions to the 'never above your head rule'. The only other one is if you are a high level racer. Your best bet on getting a good length ski is to be fitted at your local ski shop.
A good rule of thumb is that the board should stand between your chin and your nose when set on its tail. Snowboard width is usually directly related to your foot size, you need a board wide enough so your heel and toes do not drag in the snow while performing a turn. A major factor in determing the correct board size also has to do with your weight. Riders who are heavy should look for boards that have a stiffer flex. Lighter riders will need a board with a softer flex.
Well it depends on what type of skiing you want to be doing. Racing skis, slalom skis, big mountain skis, powder skis all differ in length for the same user because they are all used for different purposes. I'm assuming you are trying to find a pair of skis for casual piste skiing, so I would recommend anything in the 135-150 range in terms of length. Keep in mind that longer skis give you more speed, while shorter ones give you more control. Width, once again depends on what kind of skiing you want to do, but for the average user I would recommend nothing wider than 85-70-100, since those are the lower bounds of big mountain skis and you probably don't need anything on the level of big mountain skis if you'll be staying on groomed runs. I'm sure any ski salesperson at any Sports Chalet or Big 5 will recommend you the right ski for you if you ask.
PL 52 = USA 22
It depends on the 52 year old person....size....sex.....activity level...etc.
Some RVs use this size.
European size 52 is equivelent to 42 UK see the link below.
probably a Large i.e. 50 or XL i.e. 52. The 52 will be big but will have room to wear shirt or sweatshirt underneath.
42
52
Lyman
The formal name is pentacontakaidigon. Most people, including mathematicians, will use 52-gon since that effectively communicates the size of the polygon. But, if you want to appear pretentious or be obfuscatory, by all means use the Greek prefices.
52 cm
52
Use whatever type of oil the user manual specifies.