HARDEST MATH PROBLEM EVER

ugatennis08

ugatennis08

ugatennis08

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Joined
19 Dec 2007
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410
Location
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I have spent about 3 hours doing this and have had 4 math tutors attempt it, no one can do it! please Ocuk help!

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my working:

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I would appreciate it, literally no one can do it, 4 math tutors have tried as has my friend who is a Math Major.

There has to be a trick we are missing somewhere.
 
Surely you just create an equation from the area and perimeter equations and then differentiate to get radius which maximises area and then plug in the radius.

Any decent A-level Maths student should be able to do this.

edit: lemme check if youve done it right

edit: I get x = r = 4.2007 which corresponds to A = 63.011

x being equal to r is also intuitive if you are maximising a rectangle.
 
Last edited:
reminded me of a program on TV last night about Selling and a saleswoman measured a living room window and got it to 180 square metres and told the customer it would cost about £19,000.
She then said "That can't be right, I'll ring the boss".
 
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