The airport is upgrading their fuel storage tank with a new circular cylinder shaped tank with a lid. To be eco-friendly they wan to minimize the amount of material necessary to build the tank, but the volume must be 1 cubic meter. What dimensions will use the least material?   (Volume V=pie?2h and Surface Area S=2pie?2+2pierh). Choose the correct steps you would do to find the dimensions. Step 1 select Solve for the radius  plug in the radius in the height function to find the height  solve the volume equation for the height  solve the surface area equation for the height

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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The airport is upgrading their fuel storage tank with a new circular cylinder shaped tank with a lid. To be eco-friendly they wan to minimize the amount of material necessary to build the tank, but the volume must be 1 cubic meter. What dimensions will use the least material?
 
(Volume V=pie?2h and Surface Area S=2pie?2+2pierh).
Choose the correct steps you would do to find the dimensions.
Step 1
select
  • Solve for the radius 
  • plug in the radius in the height function to find the height 
  • solve the volume equation for the height 
  • solve the surface area equation for the height
  • set the derivative of the volume function to 0
  • take the derivative of the volume function
  • plug in the height function in for height in the surface area function 
  • set the derivative of the surface area to 0
  • take the derivative of the surface area 
  • plug in the known volume into the equation of volume 
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