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anonymous

  • one year ago

composite figures

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  1. anonymous
    • one year ago
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  2. anonymous
    • one year ago
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    This is pretty much one long cylinder. r is given as 3 and h is 24 because there are 3 cylinders joined together.

  3. anonymous
    • one year ago
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    i got 100.48

  4. anonymous
    • one year ago
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    ?

  5. anonymous
    • one year ago
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    that's not it. did you the formula in your link?

  6. anonymous
    • one year ago
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    can you show me what you did?

  7. anonymous
    • one year ago
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    2(pi)r^2 = 2(3.14)*(2)*(2)

  8. anonymous
    • one year ago
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    =25.12

  9. anonymous
    • one year ago
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    r = 3 in the picture

  10. anonymous
    • one year ago
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    2(pi)rh = 2(3.14)*(2)*(6) = 75.36

  11. anonymous
    • one year ago
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    oh opps thats the wrong one

  12. anonymous
    • one year ago
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  13. anonymous
    • one year ago
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    this one.. i am looking at

  14. anonymous
    • one year ago
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    ok. so then you need to use 18 for h because you have three 6" cylinders back to back

  15. anonymous
    • one year ago
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    ok

  16. anonymous
    • one year ago
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    let me change it

  17. anonymous
    • one year ago
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    228.08?

  18. anonymous
    • one year ago
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    i mean 226.08

  19. anonymous
    • one year ago
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    yes and then add the 25.12 you got for the circles

  20. anonymous
    • one year ago
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    226.08+25.12 = 251.2

  21. anonymous
    • one year ago
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    yes. that's it

  22. anonymous
    • one year ago
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    yaay thanks

  23. anonymous
    • one year ago
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    you're welcome

  24. anonymous
    • one year ago
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    ur smart

  25. anonymous
    • one year ago
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    lol thanks

  26. anonymous
    • one year ago
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    ok can u help me with the other one

  27. anonymous
    • one year ago
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    since ur the genius here

  28. anonymous
    • one year ago
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    ok

  29. anonymous
    • one year ago
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  30. anonymous
    • one year ago
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    First find the area of the prism

  31. anonymous
    • one year ago
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    the square?

  32. anonymous
    • one year ago
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    yes the box. Do you need help with that part? |dw:1435191242466:dw|

  33. anonymous
    • one year ago
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    A=l*w ?

  34. anonymous
    • one year ago
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    176

  35. anonymous
    • one year ago
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    right. and you need to do that for each side of the box. |dw:1435191340603:dw|

  36. anonymous
    • one year ago
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    So the top, bottom, front, and back are 176 The left and right are 121. And you add them all up to get the surface area of all six sides Does that make sense?

  37. anonymous
    • one year ago
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    ok yea it does

  38. anonymous
    • one year ago
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    what did you get for that part?

  39. anonymous
    • one year ago
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    770

  40. anonymous
    • one year ago
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    ?

  41. anonymous
    • one year ago
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    no wait

  42. anonymous
    • one year ago
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    946?

  43. anonymous
    • one year ago
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    4 sides with are 176 and 2 side with area 121 SA = 4*176 + 2* 121

  44. anonymous
    • one year ago
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    4*176=704

  45. anonymous
    • one year ago
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    2*121=242

  46. anonymous
    • one year ago
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    so 2(pi)^2 =2(3.14)*(4)*(4) =100.48

  47. anonymous
    • one year ago
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    2(pi)rh = 2(3.14)*4*9 =226.08

  48. anonymous
    • one year ago
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    leave this part out. so 2(pi)^2 =2(3.14)*(4)*(4) =100.48

  49. anonymous
    • one year ago
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    ok

  50. anonymous
    • one year ago
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    that section is already included in the rectangle. Using it results in double counting

  51. anonymous
    • one year ago
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    huh? ok u confused me

  52. anonymous
    • one year ago
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    |dw:1435192776377:dw|

  53. anonymous
    • one year ago
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    so A = 704+242+226.08

  54. anonymous
    • one year ago
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    yes i got that

  55. anonymous
    • one year ago
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    cool. that's the answer

  56. anonymous
    • one year ago
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    do i add 226.08 + 100.48?

  57. anonymous
    • one year ago
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    no just leave the 100.48 out completely

  58. anonymous
    • one year ago
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    226.08 is wrong how??

  59. anonymous
    • one year ago
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    Did you add the 704 and 242? |dw:1435193990696:dw|

  60. anonymous
    • one year ago
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    ohh

  61. anonymous
    • one year ago
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    A = 704+242+226.08 = 1051.08

  62. anonymous
    • one year ago
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    okok

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