6+5+10= 22 (ignore this i have to have 20 characters to submit this answer )
2 liters equals approximately 68 ounces, which costs about 6 cents per 12 ounces (cost per ounce is too small to document). The cost per a twelve ounce can is about 0.29 cents. The can is the better deal.
Area=pi times radius^2
the 28 is a diameter
radius is 1/2 of diameter
28/2=14
area=pi times 14^2
pi=22/7 for this quesiton
area=22/7 times 14^2
area=22/7 times 196
area=4312/7
area=616 cm^2
answer is 616 square centimeers
