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anonymous

  • one year ago

Find the area and perimeter. (Drawing will be post in Comment)

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  1. anonymous
    • one year ago
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    |dw:1441474437167:dw|

  2. calculusxy
    • one year ago
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    |dw:1441474560262:dw|

  3. anonymous
    • one year ago
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    |dw:1441474590229:dw|

  4. anonymous
    • one year ago
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    Wait let me calculate the area.

  5. calculusxy
    • one year ago
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    The first image that you have shown is a composite figure, meaning that it is made up of many different shapes. I have divided the shape into simpler figures so that you can easily find the area of each divided shapes and then add it all together to get the final area. The perimeter should be fairly easy as well because you just have to add all of the measurements of the sides together.

  6. calculusxy
    • one year ago
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    |dw:1441474779558:dw| I juts labeled all of the divided figures for an easier time to calculate the areas.

  7. anonymous
    • one year ago
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    |dw:1441474799967:dw|

  8. calculusxy
    • one year ago
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    For figure C, you have to multiply 15 x 3. Does that equal to 30, like you said?

  9. anonymous
    • one year ago
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    I multiply 10x3

  10. anonymous
    • one year ago
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    |dw:1441474915511:dw|

  11. calculusxy
    • one year ago
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    Yes that is now correct. You need to now add up all of the areas of figures A, B, and C.

  12. anonymous
    • one year ago
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    |dw:1441474983967:dw|

  13. calculusxy
    • one year ago
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    Great! That is the area of the first figure: 111m^2. Now for the perimeter add up all of the side measurements |dw:1441475068227:dw|

  14. anonymous
    • one year ago
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    |dw:1441475085978:dw|

  15. calculusxy
    • one year ago
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    |dw:1441475172755:dw|

  16. calculusxy
    • one year ago
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    Add the 6m as well because we forgot the other missing side length.

  17. anonymous
    • one year ago
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    Ohh Ok thanks ^_^ Can you please help me to other picture above?

  18. calculusxy
    • one year ago
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    Area of trapezoid: \[\large \frac{ 1 }{ 2 }(b_1 + b_2)\times h\]

  19. calculusxy
    • one year ago
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    |dw:1441475363048:dw|

  20. anonymous
    • one year ago
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    Can you wait? I gotta go eat.

  21. calculusxy
    • one year ago
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    A side note, the b_1 and the b_2 in the formula can be either one. There is no certain designation because it will equal to the same thing once you add it (according to the commutative property of addition).

  22. calculusxy
    • one year ago
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    I am sorry, I cannot. I have to go soon.

  23. anonymous
    • one year ago
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    @calculusxy I'm back :))

  24. calculusxy
    • one year ago
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    Great :) Now did you find the area.

  25. anonymous
    • one year ago
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    Wait, how can i find the area? There's 2 base

  26. calculusxy
    • one year ago
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    Did you look at the picture and the formula that I gave you?

  27. anonymous
    • one year ago
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    Ohh ok i got this. :D Check my answer

  28. anonymous
    • one year ago
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    A=77.5

  29. calculusxy
    • one year ago
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    That's correct!

  30. anonymous
    • one year ago
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    Yay! :D Thanks for everything @calculusxy ^_^ I learned something.

  31. calculusxy
    • one year ago
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    No problem :) And I always happy to teach and learn from users, like you.

  32. calculusxy
    • one year ago
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    *And I AM always happy to teach and learn from users, like you.

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