anonymous
  • anonymous
find the volume of the triangular prism to the nearest whole unit
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
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terenzreignz
  • terenzreignz
Okay, so what you have to do is get the area of the triangle up front, can you do that?
terenzreignz
  • terenzreignz
Once you find that area, multiply it to the length of this triangular prism... and you'll have the volume

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anonymous
  • anonymous
no i have no clue how to find the area:(
terenzreignz
  • terenzreignz
Formula for the area of a triangle is \[\Large \frac12\times base \times height\]
terenzreignz
  • terenzreignz
The triangle up front has height 2 and a base of length 12...
terenzreignz
  • terenzreignz
So the area of that triangle is...?
anonymous
  • anonymous
i already know the answer its 216ft^3 but i need the formula on the volume
terenzreignz
  • terenzreignz
Yes... okay, if you must have the formula for volume... then here it is :) For a triangular prism, the volume is given by \[\Large \frac12 \times base\times height \times length\]
terenzreignz
  • terenzreignz
base here being 12 height being 2 and length being 18
anonymous
  • anonymous
alright thanks:) a lot:)
terenzreignz
  • terenzreignz
No problem :)
anonymous
  • anonymous
do you know the formula for a cone?
anonymous
  • anonymous
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anonymous
  • anonymous
i know the formula i just cant figure out how to simplify it 1/3(Area of Base)(height) = 1/3 pi r2 h
terenzreignz
  • terenzreignz
Yeah, volume of a cone is given by \[\Large V = \frac13 \times \pi \times r^2\times h\]
anonymous
  • anonymous
ok thanks that much more simple
terenzreignz
  • terenzreignz
Just key in... what's your radius?
anonymous
  • anonymous
im not sure yet hold on
anonymous
  • anonymous
6in
anonymous
  • anonymous
i think i got it
terenzreignz
  • terenzreignz
Okay :)
terenzreignz
  • terenzreignz
Just remember pi is just 3.1416 (approx) and your height is 11
anonymous
  • anonymous
lol sorry but do you know the formula for a pyramid?
anonymous
  • anonymous
@terenzreignz
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