Mathcounts Marathon - Page 4 - XP Math - Forums

 XP Math - Forums Mathcounts Marathon

 08-11-2007 #31 Temperal Guest   Posts: n/a Problem!?
 08-11-2007 #32 Sillysidley   Join Date: Oct 2006 Posts: 822 I can't think of one. Let redfire make one up. __________________ .
 08-12-2007 #33 Temperal Guest   Posts: n/a Grr... I posted this in the Mathcounts Problem Solving Thread at AoPS. A rope is attached to a point at the bottom of a right circular cylinder. The rope is then wound around the cylinder four times before it is attached to a point at the top of the cylinder which is directly above the point where the rope is attached at the bottom. If the cylinder is 10 meters tall and has a radius of 3 meters, how long is the rope?
 08-12-2007 #34 Sillysidley   Join Date: Oct 2006 Posts: 822 I don't bother checking that thread anymore. So many people complain and stuff. Unrolling the rope says that the rope is the hypotenuse of a right triangle with height 10 and base $24\pi$. Pythagorean Theorem: $\sqrt{576\pi^2+100}=\sqrt{4(144\pi^2+25)}=2\sqrt{1 44\p^2+25}$. I think __________________ . Last edited by Sillysidley; 08-12-2007 at 08:11 PM.. Reason: latex
 08-13-2007 #35 Temperal Guest   Posts: n/a Yeah. PROBLEM?!
 08-13-2007 #36 Scion   Join Date: Nov 2006 Posts: 437 Dont we need a new problem now? And whats the point of this thread if somedude is going to post something and then archive knows the answer because its from aops? __________________
 08-13-2007 #37 Sillysidley   Join Date: Oct 2006 Posts: 822 Why don't you post one? __________________ .
 08-13-2007 #38 Temperal Guest   Posts: n/a Yeah!
 08-13-2007 #39 Scion   Join Date: Nov 2006 Posts: 437 where do i get mathcount problems? __________________
 08-14-2007 #40 Sillysidley   Join Date: Oct 2006 Posts: 822 From the Mathcounts website (problem of the week or go figure math challenge), OR http://www.yashar.biz/mathcounts/. But I recommend making up your own (no logs, trig...) __________________ .

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