XP Math Games Arcade

08-11-2007

Problem!?

**Sillysidley** · 08-11-2007

I can't think of one. Let redfire make one up.

08-12-2007

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?

**Sillysidley** · 08-12-2007

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

08-13-2007

Yeah.

PROBLEM?!

**Scion** · 08-13-2007

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?

**Sillysidley** · 08-13-2007

Why don't you post one?

08-13-2007

Yeah!

**Scion** · 08-13-2007

where do i get mathcount problems?

**Sillysidley** · 08-14-2007

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...)

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	#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	#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	#39
Scion Join Date: Nov 2006 Posts: 437	where do i get mathcount problems? __________________