That would be different from bike to bike. Get a vernier caliper and measure it.
No.
Plus size bike shorts can be purchased at http://www.junonia.com/infocenter/Plus_size_bike_shorts_for_riding.htm. Junonia offers great plus size bike shorts for riding in style and comfort.
A very small bike
There are different sizes for dirt bike wheels as there are for regular bike wheels.
Yes, there are stores that makes plus size bike shorts. You can visit Fashion Bug, Burlington Coat Factory and there are some other stores that sells plus size bike shorts.
No way to tell, as it will be different depending on bike size and sprocket tooth count. Bike chains are always sold overly long and are then cut to size.
Talk with a salesman, let them help determine what size dirt bike is appropriate for your. Be sure to tell them what you will be doing, play riding, racing, dual sport rides, etc. Select a model that is suitable for your skill level taking into account the bike's handling, power and size. Sit on the bike to make sure it is the right size and test ride each bike. Also, consider buying a used dirt bike.
THE BIKE HAS 250CC'S IT IS AN ENGINE SIZE. A BEGINNER BIKE.
Go to walmart and try ever bike
Depends on the size of the bike. The size of the bike doesn't necessarily pertain to the cc of the engine... But in general people 5.7'' - 6.1" fit on about any bike.
A bike that is a 125 CC has an engine size of 125 cubic centimeters. A 125 CC bike is usually used for off road travel.