If both these cans of pizza sauce are cylinders, which is best to buy.
Answers
Given : both these cans of pizza sauce are cylinders
To Find : which is best to buy
Solution:
Volume of cylinder = πr²h
Diameter = 10 cm => radius r= 5 cm
Height = 20.5 cm => h = 41/2 cm
π = (22/7)
Volume = (22/7)5² (41/2) = 1,610.7 cm³
=> Sauce = 1,610.7 ml = .16107 litre
Cost = 3.49 $
=> Cost per litre = 3.49/1.6107 = 2.167 $
Diameter = 7.5 cm => radius r=15/4 cm
Height =11 cm => h =11 cm
π = (22/7)
Volume = (22/7)(15/4)² (11) = 486.16 cm³
=> Sauce = 486.16 ml = 0.486.16 litre
Cost = 1.09 $
=> Cost per litre = 1.09/0.486.16 = 2.242 $
2.167 $ < 2.242 $
Hence larger cylinder is better option
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