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Add Maths Help Please?

I have additional mathematics project work? Can anyone help me please? I think it has something to do with differentiationAnyway, here's the question:Company X manufactures cylindrical aluminium tinsThe manager plans to reduce the cost of producitonThe production cost is proportional to the area of the aluminium sheet usedThe volume each tin holds is 1000cm? (1 liter)1Determine the value of h, r and hence calculate the ratio of h:r when the total surface area of each tin is minimumHere, h cm denotes the height and r cm the radius of the tin.2.The top and bottom pieces of the tin of height h cm are cut from square-shaped aluminium sheetsDetermine the value for r, h and hence calculate the ratio h:r so that the total area of the aluminium sheets used for making the tin is minimum.There should be a diagram here to make things clearer for you to understand, so if you need it, just email meThanx so much for the help!!

Answer:

Leave only the specialone but make sure she's very aware of itKeep a close eye on her until you know she's using it, then you can sort of forget about itHowever, if she's getting into the roaster to potty what's she going to think when the roaster is gone? If she's hanging her butt over the hole and whizzing through the air, she should do just fineI caught my cat using the toilet years ago - all on her own! I bragged on her but she was quite shocked to have been seen - and I'm not aware that she's ever used it since - darn!
The area of aluminum used is the area of the sides, 2πrh, plus the area of both ends, 2πr^2The volume of the can is V πr^2hYou can write this as h V/(πr^2) The area is then A 2πr(V/πr^2) + 2πr^2 ( 2π^2r^3)/V + 2πr^2 Take the derivative of A with respect to r, and find the minimum for AThen solve for h from the equation for volume h V/(πr^2) Without a diagram the second part cannot be solvedObviously the top, bottom and sides are laid out on the square sheet, and you want to minimize the area of the sheet usedWithout seeing the pattern, I can't do thisBut if you do have the pattern, compute the area of the sheet from the dimensions needed by the can piecesThen minimize that.
Leave both possibilities for a weekMove the box nearer the toilet if possible.
Trying to train your cat to use the toilet is being a little unfair, and goes against the cats instinct to bury a hole and cover their fecesAlso how would you like constantly cleaning cat poo and urine off the inside/outside of the toileteawThink how awful and weird it would be if you were forced to use a litter box!
I tried this a few years ago! I moved the litterbox slowly over to the toilet, and then moved it up to toilet levelThen I put it on the toilet and removed the lid (of the litterbox)After the cat was going in the litterbox on the toilet consistently I removed the litterbox and used a pan (like you're using)Then I put water in the pan becuase I couldn't cut a hole in it It was awesome!! I wasn't cleaning litter anymore!! I'm a genius! I thought.And then I found my cat had been doing his business in my husbands dirty laundry pile!!! - True story, anyways I recommend cutting a small hole in the pan and enlarging it every few days until the cat is standing on the toilet seat and doing his business into the toilet That's where I went wrong, I took away the litter and replaced it with water, the cat was like f it, I'm going on your clothes!

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