Is there a name for this equation ands can you explain the pix part of the equation?
Comment on What strategy would you use to estimate the number of hazelnuts
m0darn@lemmy.ca 3 days ago
I did
V=pi×r²×h
and estimated:
r=4 (from some at the top left)
h=12
This gave 603. The link said too high, so realized I’d neglected packing factor. Google said that spheres typically pack at 64% efficiency, so I guessed 386. Too low.
aeiou_ckr@lemmy.world 3 days ago
abbadon420@sh.itjust.works 3 days ago
Its not “pix” its “pi * r² * h”. It’s a basic equation for the volume (V) of a cylinder.
aeiou_ckr@lemmy.world 2 days ago
Gotcha, thanks.
stormdelay@sh.itjust.works 3 days ago
It’s the volume of a cylinder, pi times height times radius squared
aeiou_ckr@lemmy.world 2 days ago
Oh. Thanks. :)
WiseScorpio@lemmy.world 2 days ago
These aren’t spheres, though, so the packing efficiency could be better, like 72% or better. These look better packed than those vases filled with glass marbles. So it could even be in the 80s.
m0darn@lemmy.ca 2 days ago
Yeah I went 80% next which was too high. 72% is very close to the answer in the link.