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katlin95

  • one year ago

find the surface area of the figure. A. 19.21 cm^2 B. 10.37 cm^2 C. 34.85 cm^2 D. 6.29 cm^2

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  1. katlin95
    • one year ago
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    @jim_thompson5910 please help?

  2. katlin95
    • one year ago
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    |dw:1364868506696:dw|

  3. katlin95
    • one year ago
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    sorry this is a very bad drawing,, but can I please get some help?

  4. katlin95
    • one year ago
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    @e.cociuba

  5. jim_thompson5910
    • one year ago
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    same ideas as last time where we did this one http://openstudy.com/study#/updates/515a3840e4b07077e0c11e44 the only difference is that the numbers are changed

  6. katlin95
    • one year ago
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    can you give me the solution to solve?

  7. jim_thompson5910
    • one year ago
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    what's the area of the base

  8. katlin95
    • one year ago
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    1.7

  9. katlin95
    • one year ago
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    or 3.4

  10. jim_thompson5910
    • one year ago
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    1.7 is the length of the side of the square

  11. jim_thompson5910
    • one year ago
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    (1.7)^2 = ???

  12. katlin95
    • one year ago
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    2.89

  13. jim_thompson5910
    • one year ago
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    what is the area of each triangular piece

  14. katlin95
    • one year ago
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    8.29?

  15. jim_thompson5910
    • one year ago
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    how did you get that?

  16. katlin95
    • one year ago
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    I added all sides

  17. jim_thompson5910
    • one year ago
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    Area of triangle A = (b*h)/2 A = (4.8*1.7)/2 A = ???

  18. jim_thompson5910
    • one year ago
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    I recommend writing down each area and perimeter formula on a note sheet so you can look them up quickly

  19. katlin95
    • one year ago
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    4.08

  20. jim_thompson5910
    • one year ago
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    good, now multiply that by 4 afterwards, add that to 2.89

  21. katlin95
    • one year ago
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    19.21

  22. jim_thompson5910
    • one year ago
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    perfect

  23. katlin95
    • one year ago
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    yay!

  24. jim_thompson5910
    • one year ago
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    you got 16.32 for the lateral surface area 2.89 was the base area

  25. katlin95
    • one year ago
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    ohh okai

  26. jim_thompson5910
    • one year ago
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    so total surface area = base area + lateral surface area total surface area = 2.89 + 16.32 just summing things up (you probably already know by now)

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