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anonymous

  • 5 years ago

would this be right??

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  1. anonymous
    • 5 years ago
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    9*9*4

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  2. anonymous
    • 5 years ago
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    (9*4)9

  3. anonymous
    • 5 years ago
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    finding volume

  4. anonymous
    • 5 years ago
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    no, that's not right.

  5. anonymous
    • 5 years ago
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    \[(1 / 2)9\times9\times4\]

  6. anonymous
    • 5 years ago
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    is the triangle an equilateral triangle, a right angle triangle or an isosceles triangle?

  7. anonymous
    • 5 years ago
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    would the area be \[(1 / 2)81\left( 4 \right)=162 \]

  8. anonymous
    • 5 years ago
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    how did you arrive at (1/2)*9*9? How do you know the height of the triangle is 9?

  9. anonymous
    • 5 years ago
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    the bottom part has a 9 and has a tick mark so all three sides are equal and 4 in the height

  10. anonymous
    • 5 years ago
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    still, the height is not 9, only the sides are 9.

  11. anonymous
    • 5 years ago
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    you have to calculate the height of the triangle and plug it in the formula 1/2 base*height. base is 9.

  12. anonymous
    • 5 years ago
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    9 is the base

  13. anonymous
    • 5 years ago
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    right. calculate height using Pythagoras theorem

  14. anonymous
    • 5 years ago
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    V=Bh= (1/2*9*9)(4)= (40.5)(4)=162

  15. anonymous
    • 5 years ago
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    I am talking about the height of the triangle. for an equilateral triangle of side 9, how do you calculate its area?

  16. anonymous
    • 5 years ago
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    draw an equilateral triangle on a piece of paper. how do you calculate its height?

  17. anonymous
    • 5 years ago
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    a^2+b^2=C^2

  18. anonymous
    • 5 years ago
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    ok good, what is a, b and c in an equilateral triangle?

  19. anonymous
    • 5 years ago
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    a=9 b=9 c=162

  20. anonymous
    • 5 years ago
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    no, that is not right. http://math.about.com/od/formulas/ss/areaperimeter.htm In that picture, the area of the triangle is 1/2b*h. so, what do you know about an equilateral triangle that will make finding the height easier?

  21. anonymous
    • 5 years ago
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    the height in my picture is 4

  22. anonymous
    • 5 years ago
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    no, that is not the height of the triangle, it is the height of the prism. I am talking about the height of the triangle. The volume of the prism is the area of the triangle times the height of the prism, correct? so you know the height of the prism. Now you need to find the area of the triangle. So, in order to do that you need to find the height of the triangle, so that you can put it in the formula 1/2b*h.

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