There are a lot of different kinds of Cessnas, so for an accurate number you would need to specify which particular model you want to know about.
For a generic number though, MacFarlane Aviation lists 2733 different parts that you can buy as replacement parts. Some parts won't be listed there because they aren't being manufactured anymore, and those are parts that are likely used for different types of Cessna... still, though, an impressive number. If you select a specific model, it limits the number. For instance, they have 61 parts for a Cessna for a Cessna 120, and 260 parts for a Cessna U206G. Again, though, that might not be the actual number of parts, but just the amount they have in stock.
As many as it needs.
Parts for Cessna aircrafts can be obtained from specialist dealers such as Proviation, Constant Aviation, Cessna Direct, and also from Preferred Airparts,
The Cessna Aircraft Company builds many different types of aircrafts. These can be found on many different websites online. Some of the types of planes that they build are the Cessna CH-1, Cessna 206, Cessna 510 and the Cessna 750.
Cessna manufactures either single or twin engines.
There are many types of Cessna, you would have to give a model number for this answer.
There are many types of Cessna, you would have to give a model number for this answer.
you can purchase them from chief aircraft parts online
Cessna is a manufacturer that has manufactured many, many different aircraft models. One model I am familiar with is the Cessna 172R, which can hold 56 US Gallons, 53 of which are usable.
Cessna C-150 can hold 1 passenger. Cessna C-172 can hold 3 passengers
There are many different kinds of Cessna so your question is un-answerable.
Which one? A Cessna 150 has two seats. A Citation Sovereign has 12.
That depends which one. There are mant types of Cessna and you would have to name a type for such an answer