cm - centimetres- because of the size, however some might measure in inches which would be less accurate.
It depends upon your motivation. A raffle ticket can be a donation to a good cause -- not sin. Or it can be from a desire to get a lot from little, or greed. Greed is sin.
I would measure it with a ruler.
centimeter
Any measure of length will do, but the most common would be feet or meters.
You would answer it with cubic feet
length
If you don't return the money, most definitely. And there are likely to be penalties for running an illegal raffle.
A metres, for an approximate measure, a centimetre for a more accurate measure.
I would use feet
You would use meters.
Yes you can but, keep in mind that by "raffling" off the ATV you can get less money then what you would have gotten if you had just sold it ... There is no way to say for sure how many people will buy a raffle ticket and regardless of how many people buy a ticket you most raffle off the ATV if you do not you can go to jail for fraud and letter be sued for false advertising ...Added: Also - depending on where you live you may have to get a license to conduct a "game of chance."
Inches