You specified no units so I will have to just assume you mean 16 inches and 11 feet. First convert feet to inches such that 11ft*(12in/ft)=132in. Second determine the square areas of both such as (132^2)/(16^2)=68 pavers.
216
272 Get 300 to be safe.
One should do it!
144
One should be more than enough!
576 should do it.
216
272 Get 300 to be safe.
One should do it!
Depend on the size of the pavers.
144
One should be more than enough!
264 of them. Get extra for breakage.
If both items are measured in inches or feet, the half is the answer. Without more info. this cannot be answered.
144 Get 160 to be safe.
72 Get 80 to be safe.
The number of pavers you will need will be basd on the size of your patio. You should measure the square feet of your patio.