SOLUTION: Making a Can A can in the shape of a right circular cylinder is required to have a volume of 250 cubic centimeters. Express the amount A of material to make the can as a function

Question 815411: Making a Can A can in the shape of a right circular cylinder is required to have a volume of 250 cubic centimeters. Express the amount A of material to make the can as a function of the radius r of the cylinder and how much material is required if the can is of a radius 5 centimeters?
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
v = 250 cu.cm
v = pi*r^2*h
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a = (2*pi*r^2) + (2*pi*r*h)
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for r = 5 cm:
v = pi*r^2*h
250 = pi*25*h
h = 3.1830989 cm
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a = (2*pi*r^2) + (2*pi*r*h)
a = (2*pi*25) + (2*pi*5*3.1830989)
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a = 257.07963 sq.cm
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