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A can company wishes to produce a cylindrical container with the capacity of 1250 cubic centimeters. The top and bottom of the container must be made of material that costs $0.05 per square centimeter, while the material for the side is $0.03 per square centimeter. Find the dimensions that will minimize the cost of the container.

User Lampak
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Final Answer:

To minimize the cost of the cylindrical container, the radius should be 0.106 centimeters and the height should be 0.826 centimeters. This will result in a total cost of $0.0201

Step-by-step explanation:

Let r be the radius of the cylinder and h be the height. The volume of the cylinder is given by:

V = πr²h

In this case, we are given that the volume of the cylinder is 1250 cubic centimeters:

1250 = πr²h

We can also express the cost of the cylinder in terms of r and h. The top and bottom of the cylinder have a total area of 2πr², and the side of the cylinder has an area of 2πrh. Therefore, the total cost is:

C = 0.05(2πr²) + 0.03(2πrh)

We can now use the volume equation to solve for h in terms of r:

h = 1250 / (πr²)

Substituting this into the cost equation, we get:

C = 0.1πr² + 0.06πr(1250 / (πr²))

Simplifying and rearranging, we get:

C = 60 / r + 1.5r

To minimize the cost, we can take the derivative of C with respect to r and set it to zero:

dC/dr = -60 / r² + 1.5 = 0

Solving for r, we get:

r = 10.630037923095803

Substituting this value of r back into the volume equation, we get:

h = 1250 / (π(10.630037923095803)²)

h = 8.268431645279969

Therefore, the dimensions that will minimize the cost of the cylindrical container are a radius of 0.106 centimeters and a height of 0.826 centimeters. This will result in a total cost of $0.0201.

User Markplindsay
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