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anonymous

  • one year ago

help i reward c:

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  1. anonymous
    • one year ago
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    Use a net to find the surface area of the right triangular prism shown below: |dw:1434558778765:dw|

  2. anonymous
    • one year ago
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    @Vocaloid i was just about to ask for your help XD

  3. Vocaloid
    • one year ago
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    |dw:1434558982623:dw|

  4. Vocaloid
    • one year ago
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    ok, this is kinda hard to explain, but if you can imagine this net folding into a prism, you can see that the missing lengths I marked are 12 and 5 to find the surface area, find the area of each section and add them together

  5. Vocaloid
    • one year ago
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    |dw:1434559089779:dw|

  6. anonymous
    • one year ago
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    so 8x12=96

  7. Vocaloid
    • one year ago
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    section 1: a rectangle with sides 8 and 12 section 2: a rectangle with sides 8 and 5 section 3: a rectangle with sides 8 and 13 sections 4 and 5: a triangle with height 12 and base 5

  8. Vocaloid
    • one year ago
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    96 is the area of section 1, keep going ! :)

  9. anonymous
    • one year ago
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    40 section 2

  10. Vocaloid
    • one year ago
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    good, keep going

  11. anonymous
    • one year ago
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    104 section 3 and 60 section 4

  12. anonymous
    • one year ago
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    and 5

  13. Vocaloid
    • one year ago
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    hm, not quite, check sections 4 and 5 remember area of a triangle: 1/2*base*Height

  14. anonymous
    • one year ago
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    30

  15. Vocaloid
    • one year ago
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    good! so, 96+40+104+30+30= total surface area

  16. anonymous
    • one year ago
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    300

  17. anonymous
    • one year ago
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    if i could hug you i would you help explain everything so well (:

  18. anonymous
    • one year ago
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    can you help with more? but not much. @Vocaloid

  19. Vocaloid
    • one year ago
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    sure

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