0

# Brain breaker riddle

Wed 1 Jul, 2009 09:59 am
The flagpole on the roof of the a Chocolate Factory is 13 cm in diameter and a perfect cylinder. If one end of a 2300-cm-long string is attached to the top of the flagpole, and wraps around the flagpole exactly 16 times before ending at the bottom of the flagpole, how tall is the flagpole? Please round to the nearest centimetre, and submit only a number
• Topic Stats
• Top Replies
• Link to this Topic
Type: Discussion • Score: 0 • Views: 4,162 • Replies: 4
No top replies

Merry Andrew

1
Wed 1 Jul, 2009 11:14 am
@devlin,
That's not a riddle. It's a maths problem to solve. Maybe someone will come along to solve it for you.
0 Replies

fresco

1
Wed 1 Jul, 2009 12:57 pm
@devlin,
From this discussion

http://www.physicsforums.com/showthread.php?t=94758

it looks like a formula for the vertical distance d of one turn of the helical spiral is given by
d=sqrt(l^2-4pi^2 r^2) where l = 2300/16 and r=13/2
The height of the pole would therefore be 16 times that.
fresco

1
Wed 1 Jul, 2009 01:10 pm
@fresco,
=appx 2270 cm
fresco

1
Wed 1 Jul, 2009 01:40 pm
@fresco,
CORRECTION

appx 2205 cm

(I forgot to square PI)
0 Replies

### Related Topics

Alternative Einstein's riddle answer - Discussion by cedor
Urgent !!! Puzzle / Riddle...Plz helpp - Question by zuzusheryl
Bottle - Question by Megha
"The World's Hardest Riddle" - Discussion by maxlovesmarie
Hard Riddle - Question by retsgned
Riddle Time - Question by Teddy Isaiah
riddle me this (easy) - Question by gree012
Riddle - Question by georgio7
Trick Question I think! - Question by sophocles
Answer my riddle - Question by DanDMan52

1. Forums
2. » Brain breaker riddle
Copyright © 2022 MadLab, LLC :: Terms of Service :: Privacy Policy :: Page generated in 0.03 seconds on 05/25/2022 at 05:15:28