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Math riddle...

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Caveman.
Posts: 9067 - Karma: 330
Say you have a 50 square mile area, how many miles would it take to walk the ENTIRE perimeter?
Feb 17 2008 11:44PM
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carbon.pulse
Posts: 3348 - Karma: 22
28.284 miles
Feb 17 2008 11:46PM
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Pippin
Posts: 4846 - Karma: 661
eithier 50^2 or 50 x 4 i don't have a calc near me....but im probably wrong seeing as this is a riddle
Feb 17 2008 11:52PM
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Caveman.
Posts: 9067 - Karma: 330
that is wrong
Feb 17 2008 11:53PM
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anxju
Posts: 9371 - Karma: 61
it depends!!!!!!!!!
Feb 17 2008 11:54PM
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Cloud.
Posts: 1195 - Karma: 16
the answer is 6
Feb 17 2008 11:55PM
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jibmaster_josh
Posts: 2369 - Karma: 23
thats what i got too.
Feb 17 2008 11:57PM
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Caveman.
Posts: 9067 - Karma: 330
this depends to..
Feb 17 2008 11:58PM
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breckfreeskier
Posts: 1541 - Karma: 22
30 miles? I probably made it way to simple. Yes, yes i did, It all depends on the setup of the acreage
Feb 18 2008 12:03AM
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Aenigma
Posts: 11256 - Karma: 424
What are the dimensions of said space?  The perimeter will change depending on the length of each side.
Feb 18 2008 12:04AM
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dammitmike
Posts: 2530 - Karma: 24
the shape of the area that you are trying to find the perimeter of? a square with an area of 50 sq miles has a perimeter of 28.28 miles while a circle with an area of 50 sq miles has a circumference(perimeter) of 25.07... unless i really screwed that up.
Feb 18 2008 12:11AM
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Klick_2_klaim
Posts: 3396 - Karma: 25
no it doesnt, at all.

Feb 18 2008 12:16AM
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.SteezusChrist.
Posts: 2296 - Karma: 276
no calc on me, but i got about 28, since 50 is by 49, which is a perfect square and is 7, so each side is about 7, and 7 times 4 equals 28
Feb 18 2008 12:18AM
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anxju
Posts: 9371 - Karma: 61
it would take no miles!!!!! it would take 2 feet!!!! hahahah you cant fool me.  i dont need any miles to walk anywhere. i just need my own 2 feet and a pair of shoes maybe
Feb 18 2008 12:30AM
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ferrinski86
Posts: 774 - Karma: 10
exactly
Feb 18 2008 12:31AM
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.SteezusChrist.
Posts: 2296 - Karma: 276
wait, you never specified if it was a perfect square of land, so it could be a rectangle that was 50 by 1, therefore the answer would be 102
Feb 18 2008 12:32AM
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Tinga
Posts: 11349 - Karma: 2,333
this riddle sucks theres going to be some technicality that no one will understand cause you worded the question wrong.
Feb 18 2008 12:41AM
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kepler.
Posts: 8761 - Karma: 139
Yes, it really does. We did this on day one of AP Calculus.


Whoever said it depends is correct. We don't know the shape, therefore it is impossible to know the perimeter. If its all squiggly and shit just use Reimann's Sums and you're close enough.
Feb 18 2008 8:56AM
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Skierguy1234
Posts: 1684 - Karma: 88

i think we have a winner.

Feb 18 2008 10:09AM
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Tom.
Posts: 1954 - Karma: 12
The most correct answer that I can give you is the perimeter is ≥ 17.366 meters.
This is because the least amount of perimeter that a shape can have with an area of 24 square meters is the perimeter of a circle with a like area. The perimeter of such a circle is about 17.366 meters.

A=πr²
24=πr²
r=(24/π)^½

P=2πr
P=2π(24/π)^½
P≈17.366

The greatest perimeter that a shape can have with an area of 24 square meters is infinite. Imagine a rectangle with an incredibly small width. In order for this rectangle to have an area of 24 square meters, the length would have to be incredibly long. this would make the perimeter of the rectangle roughly twice its length. If you make the width small enough the perimeter becomes infinite.
Feb 18 2008 1:14PM
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brenker
Posts: 3188 - Karma: 71
100 miles?
Feb 18 2008 1:28PM
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anxju
Posts: 9371 - Karma: 61
excuse me but i already gave the right answer
Feb 18 2008 1:43PM
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ax_murderer
Posts: 3322 - Karma: 30
whats the answer
Feb 18 2008 1:57PM
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ryano
Posts: 4465 - Karma: 1,535
.
Feb 18 2008 2:04PM
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skiEER
Posts: 4089 - Karma: 79
assuming that this a square take the square root of 50 then multiply by 4=around 28
Feb 18 2008 2:24PM
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St.Steezy
Posts: 4228 - Karma: 20
Why would you use reimann sums when you could just the intergral. Then there would be no approximation.
Feb 18 2008 2:39PM
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dan.b
Posts: 866 - Karma: 10

how are you gonna get a perimeter with an integral?

Feb 18 2008 2:52PM
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Itsbackfliptime
Posts: 18901 - Karma: 75
http://en.wikipedia.org/wiki/Arc_length
Feb 18 2008 3:43PM
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