8
The area of a 16" pizza is 201.2 sq inches which is 0.1297 sq metres
I suggest you divide the 14 inches and the 11 inches by 2 to get the radius (presumably, the numbers refer to the diameter). Then you can calculate the area using the formula for a circle, and compare.
Thinking reasonable slices here, I thought it out a minute and it is reasonable to say, about 8 people for an 8 inch cake. Taking a picture of an 8 inch circle (to scale) and drawing on it first a line across the middle center, and then to make it fours, and two more lines across and you get 8. SO 8 :D
A pizza typically contains about 8-10 slices. If it's just for a snack, two pizzas should be enough for everyone to have at least one slice. If a meal, 4 pizzas will allow 13 people to have at least 2 slices, with some extra for hungry people.
An entire village in South Africa.
6 Slices = 2-3 pax
2 people.
How many pizza's that it will take to feed 60 people will vary depending on how hungry people are and the size of the pizza. If you use a large pizza with 10 slices and figure everyone will eat at least 2 slices, you will need about 12 to 20 pizza's.
It depends on how big/small the pieces are.
8
27.2
Area of a 14 inch pizza = 43.98in2. Area of a 12 inch pizza = 37.70in2. Difference between the two = 6.28in2.
It matter where you buy the pizza
As many as you want. You decide.
2
A large Domino's Pizza is about 14 inches in diameter and is typically cut into eight slices. It can be expected to feed about 3-5 adults, on average.