#help pls i think there are two answers to this but there can only possibly be one

10 messages · Page 1 of 1 (latest)

daring ingot
#

aint it b and c? both are nets of cylinders...

tawdry acornBOT
#
  1. Wait patiently for a helper to come along.
  2. Once someone helps you, say thank you and close the thread with:
+close
  1. Feel free to nominate the person for helper of the week in #helper-nominations
  2. Do not ping the mods, unless someone is breaking the rules.
  3. If you're happy with the help you got here, and the server overall, you can contribute financially as well: https://www.patreon.com/mathsdiscord
smoky fossil
daring ingot
#

wdym

#

explain a bit further pls

#

@smoky fossil

smoky fossil
#

Well, the circle has to be "wrapped around" by the rectangle, right?
Thus, when we unwrap the cylinder to make its net, the red lines must all be of the same length.

#

And as you know, the circle with diameter d has length L = πd.
So, in a cylinder we must have l(red)/l(green) = π, so about 3.14.

daring ingot
#

+close