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gabbyalicorn

  • one year ago

What is the surface area of the prism? Solid Figures, Part 1 A. 480 in2 B. 348 in2 C. 116 in2 D. 672 in2

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  1. gabbyalicorn
    • one year ago
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    https://www.dropbox.com/s/wu96haczotom8he/Screenshot%202015-06-15%2020.07.15.png?dl=0

  2. jim_thompson5910
    • one year ago
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    |dw:1434424134494:dw|

  3. jim_thompson5910
    • one year ago
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    |dw:1434424434549:dw|

  4. jim_thompson5910
    • one year ago
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    what is the area of the front triangular face? |dw:1434424485040:dw|

  5. gabbyalicorn
    • one year ago
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    16?

  6. jim_thompson5910
    • one year ago
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    no

  7. jim_thompson5910
    • one year ago
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    |dw:1434424530558:dw|

  8. jim_thompson5910
    • one year ago
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    area of triangle = (base*height)/2

  9. gabbyalicorn
    • one year ago
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    Oh, sorry. My mistake. 96

  10. jim_thompson5910
    • one year ago
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    closer

  11. jim_thompson5910
    • one year ago
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    but still no

  12. jim_thompson5910
    • one year ago
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    area of triangle = (base*height)/2

  13. gabbyalicorn
    • one year ago
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    Oh, divide. 48

  14. jim_thompson5910
    • one year ago
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    yep that's the front face

  15. jim_thompson5910
    • one year ago
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    front face = 48 back face = 48 since the two faces are congruent

  16. gabbyalicorn
    • one year ago
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    Right, makes sense..

  17. jim_thompson5910
    • one year ago
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    |dw:1434424668167:dw|

  18. Kash_TheSmartGuy
    • one year ago
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    S=Ph+2B S=36(7)+2(0.5)(16)(6) S=252+96 Surface Area= 348in2 B.

  19. gabbyalicorn
    • one year ago
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    7 x 16?

  20. jim_thompson5910
    • one year ago
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    |dw:1434424731265:dw|

  21. gabbyalicorn
    • one year ago
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    70

  22. Kash_TheSmartGuy
    • one year ago
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    It's B. Confirm it.

  23. jim_thompson5910
    • one year ago
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    the face face will be the same since it's also a 7 by 10 rect |dw:1434424787273:dw|

  24. jim_thompson5910
    • one year ago
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    oops meant to write "left face"

  25. jim_thompson5910
    • one year ago
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    not face face

  26. gabbyalicorn
    • one year ago
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    k so 48, 48, 70 and 70.

  27. jim_thompson5910
    • one year ago
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    front face = 48 back face = 48 right face = 70 left face = 70

  28. gabbyalicorn
    • one year ago
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    I got 236.

  29. jim_thompson5910
    • one year ago
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    now you need the bottom face |dw:1434424863320:dw|

  30. gabbyalicorn
    • one year ago
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    This one is hard, I'm thinking 16 x 7?

  31. jim_thompson5910
    • one year ago
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    yep |dw:1434424946890:dw|

  32. gabbyalicorn
    • one year ago
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    Hazaa! 112

  33. jim_thompson5910
    • one year ago
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    front face = 48 back face = 48 right face = 70 left face = 70 bottom face = 112

  34. gabbyalicorn
    • one year ago
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    so add 48, 48, 70, 112, and 70.

  35. jim_thompson5910
    • one year ago
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    yep

  36. gabbyalicorn
    • one year ago
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    Which is B, 348. Thank you! ^u^

  37. jim_thompson5910
    • one year ago
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    no problem

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