1018
  • 1018
The volume of a regular triangular prism is 90 sqrt of 3 cm^3. If the radius of the inscribed circle in the base is 3 cm, find the altitude of the prism
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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AkashdeepDeb
  • AkashdeepDeb
Do you know trigonometry or Pythagorus theorem? :D
AkashdeepDeb
  • AkashdeepDeb
@1018 ?
1018
  • 1018
Oh, hey sorry. Yeah I'm familiar. :)

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More answers

AkashdeepDeb
  • AkashdeepDeb
Both?
AkashdeepDeb
  • AkashdeepDeb
|dw:1378556360393:dw| Now find area of triangle and then divide it from the volume of the prism. :) Understood? :)
1018
  • 1018
Area of triangle would be 1/2(b*h) right?
AkashdeepDeb
  • AkashdeepDeb
No this is a regular triangular prism so the triangle must be equilateral triangle. Whose area = rt3*side^2/4
1018
  • 1018
what is t? sorry for late reply. Net's reaaaally slow.
AkashdeepDeb
  • AkashdeepDeb
root 3
1018
  • 1018
is that sqrt of 3?
AkashdeepDeb
  • AkashdeepDeb
Yes.
AkashdeepDeb
  • AkashdeepDeb
Understood now? :)
1018
  • 1018
so then i should substitute them to V=Bh formula to get the height right? Ooh, I was wrong on the triangle formula. Haha
AkashdeepDeb
  • AkashdeepDeb
Yes you should do that.
1018
  • 1018
Thank you! :)
AkashdeepDeb
  • AkashdeepDeb
:)
1018
  • 1018
just to be clear, the side of the triangle is 4sqrt3 right?
AkashdeepDeb
  • AkashdeepDeb
2sqrt3

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