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hihi

  • 4 years ago

Find the volume of an equilateral triangular prism with triangles of side 4 cm and length 10 cm

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  1. hihi
    • 4 years ago
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    i know it is area X height, but im not sure how to get the 2.

  2. anonymous
    • 4 years ago
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    it's actually V = (1/2)base*length*height

  3. hihi
    • 4 years ago
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    but how would you get the correct answer?

  4. anonymous
    • 4 years ago
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    is that really how the question is worded? exactly?

  5. anonymous
    • 4 years ago
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    oh wait.. sorry i get it now

  6. hihi
    • 4 years ago
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    oh

  7. hihi
    • 4 years ago
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    because i read and saw that to get the volume of a triangular prism it said area X height

  8. anonymous
    • 4 years ago
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    |dw:1328743809480:dw| seeing this you find the only thing you have to find is the height so.. chop the triangle in half ! |dw:1328743948170:dw|

  9. hihi
    • 4 years ago
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    so what would the height be?

  10. anonymous
    • 4 years ago
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    are you familiar with pythagorus theorem? excuse my spelling

  11. hihi
    • 4 years ago
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    yes im familiar but i just forget it

  12. anonymous
    • 4 years ago
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    well if i give you the equation : 2^2+h^2=4^2 will you be able to solve that in terms of h?

  13. hihi
    • 4 years ago
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    then would h be 2?

  14. anonymous
    • 4 years ago
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    no.. it's a little deeper than that first square the terms you know 2^2 =4 and 4^2 = 16 so.. 4+h^2=16

  15. anonymous
    • 4 years ago
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    or h^2=12

  16. hihi
    • 4 years ago
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    oh so h=6?

  17. anonymous
    • 4 years ago
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    not quite h^2 means h squared. and the only way to do that is to take the square root of both sides so. \[\sqrt(h^2)=\sqrt12\] \[h=\sqrt(12)\] now if you know how to do that on your calculator, that will be your value for h, or the height. then you can use that in the original equation i showed you to come up with your final answer!

  18. hihi
    • 4 years ago
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    TY SO MUCH :)

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