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anonymous

  • one year ago

help please surface area of prism and triangles

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  1. anonymous
    • one year ago
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  2. anonymous
    • one year ago
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    Well, I suppose you know how to find the area of a rectangle. It's a lot like that, but for 6 rectangles! I'll start you off. 3 in times 11 in = 33. Since it's the same on the other side- that's 66 square inches. Can you do the rest? (you only need to do two more, just multiply them by two sine the opposite side will always be the same.) Once you're done you can add them up.

  3. anonymous
    • one year ago
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    since*

  4. anonymous
    • one year ago
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    front is 18 isnt it?

  5. anonymous
    • one year ago
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    18 by 3. 3 is the height, 8 is the width.

  6. anonymous
    • one year ago
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    18*

  7. anonymous
    • one year ago
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    f/b = 18x3 =56 x2 =108

  8. anonymous
    • one year ago
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    Are you sure 18x3 is 56?

  9. anonymous
    • one year ago
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    oh wait 54

  10. anonymous
    • one year ago
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    Oh, probably a typo, since you got 108. Alright, so you have 1 more side to go,

  11. anonymous
    • one year ago
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    the top

  12. anonymous
    • one year ago
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    (and bottom)

  13. anonymous
    • one year ago
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    t/b = 11x3 =33x2=66 ?

  14. anonymous
    • one year ago
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    is that right?

  15. anonymous
    • one year ago
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    That's the one I did. The top is 18*11

  16. anonymous
    • one year ago
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    ok

  17. anonymous
    • one year ago
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    18x 11= 198x2 =396

  18. anonymous
    • one year ago
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    Yup, so now let's add it up. 396+66+108 =

  19. anonymous
    • one year ago
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    507

  20. anonymous
    • one year ago
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    Did you mean 570?

  21. anonymous
    • one year ago
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    opps yea

  22. anonymous
    • one year ago
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    sorry

  23. anonymous
    • one year ago
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    570

  24. anonymous
    • one year ago
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    NP. So that's your answer.

  25. anonymous
    • one year ago
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    thanks

  26. anonymous
    • one year ago
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    You're welcome.

  27. anonymous
    • one year ago
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    u get a medal

  28. anonymous
    • one year ago
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    Yaaaaaaaayyyyy

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