superhelp101
  • superhelp101
The triangles below are all equilateral and each smaller triangle has a side length half that of the next larger. If the pattern continues, what is the total perimeter of all the triangles? I keep getting 21, but its wrong :(
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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superhelp101
  • superhelp101
@Compassionate :)
superhelp101
  • superhelp101
|dw:1432788819070:dw|
random231
  • random231
total perimeter of these three triangles is no doubt 21

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More answers

superhelp101
  • superhelp101
ikr! I don't understand my teacher marked it wrong :(
random231
  • random231
but i think whats asked in the question is the sum of all the triangles following this pattern. Which means you have a infinite GP series
superhelp101
  • superhelp101
so is that |dw:1432789511714:dw|
random231
  • random231
yup!!
superhelp101
  • superhelp101
i got -3
random231
  • random231
nope
superhelp101
  • superhelp101
:(
random231
  • random231
|dw:1432789886420:dw|
random231
  • random231
try this ^^^^
superhelp101
  • superhelp101
but where would the 1/2 go cuz its n
superhelp101
  • superhelp101
nevermind! 8
superhelp101
  • superhelp101
right ? :/
random231
  • random231
bullseye :))
superhelp101
  • superhelp101
so 8 is the total perimeter?
random231
  • random231
yeah i think thats the answer!! :)
superhelp101
  • superhelp101
Thank you! :)))))) :DD
random231
  • random231
youre welcome!!

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