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anonymous

  • 5 years ago

Find H. V = 768 cm3

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  1. anonymous
    • 5 years ago
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  2. dumbcow
    • 5 years ago
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    Volume = areaBase *h h = areaBase/volume volume = 768 we need to find areaBase for this figure the base or top and bottom is a right triangle the triangle has one side of 8 and diagonal side of 17 area of triangle = 1/2*length*height find height of triangle using pythagorean theorem a^2 +b^2 = c^2 so 8^2+b^2 = 17^2 find b, then use that to find area of triangle

  3. anonymous
    • 5 years ago
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    i got 15

  4. dumbcow
    • 5 years ago
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    correct areaTriangle = 1/2*8*15

  5. anonymous
    • 5 years ago
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    does 15 as height?

  6. dumbcow
    • 5 years ago
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    oops i made a mistake h=volume/areaBase

  7. dumbcow
    • 5 years ago
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    yes 15 is height of triangle

  8. anonymous
    • 5 years ago
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    Find h. V = 896 cm3

  9. dumbcow
    • 5 years ago
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    what do you get for an answer for H?

  10. anonymous
    • 5 years ago
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    192

  11. dumbcow
    • 5 years ago
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    how did you get 192?

  12. anonymous
    • 5 years ago
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    768=1/2*8*H

  13. dumbcow
    • 5 years ago
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    be careful there are 2 equations one is for 2-dimensional triangle (The base) one is for 3-dimensional prism 768 = (AreaTriangle)*H AreaTriangle = 1/2*8*15

  14. anonymous
    • 5 years ago
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    i got 12.8

  15. dumbcow
    • 5 years ago
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    correct

  16. anonymous
    • 5 years ago
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    ok can u help me with the next question

  17. dumbcow
    • 5 years ago
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    Volume = areaBase*Height 896 = areaBase*24 areaBase = 896/24=112/3 Base is a hexagon, but can be split up into 2 trapezoids Area of trapezoid = 1/2*h*(b1+b2) = 112/3 b1 =12 b2 = 20 solve for h

  18. dumbcow
    • 5 years ago
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    wait another mistake areaTrapezoid = 1/2*areabase = 1/2*112/3 = 112/6=56/3

  19. dumbcow
    • 5 years ago
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    sorry i gotta go good luck answer is 1.166 so you can check

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