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DorelTibi

  • one year ago

/Users/doreltibi/Desktop/Screen Shot 2012-12-31 at 1.17.06 PM.png

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  1. DorelTibi
    • one year ago
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  2. DorelTibi
    • one year ago
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    help

  3. DorelTibi
    • one year ago
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    help

  4. aacehm
    • one year ago
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    |dw:1356989474509:dw| Does knowing that you can divide a parallellogram into a rectangle and two triangles help?

  5. DorelTibi
    • one year ago
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    not really

  6. aacehm
    • one year ago
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    |dw:1356989718574:dw| |dw:1356989750298:dw|

  7. DorelTibi
    • one year ago
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    I think its like this: 144+b^2=400 b^2=266 b=16.3

  8. aacehm
    • one year ago
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    yep, that's the height of the rectangle, and you just need to find the length and multiply.

  9. DorelTibi
    • one year ago
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    how do u find the length

  10. DorelTibi
    • one year ago
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    ?

  11. DorelTibi
    • one year ago
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    help

  12. aacehm
    • one year ago
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    well, think about it. If you cut that triangle off and put it back on, just on the other side, you're not changing the length at all

  13. DorelTibi
    • one year ago
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    so its twelve inches the length

  14. aacehm
    • one year ago
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    no, that's the length of the triangle you cut off. The length of the base of the parallelogram is the length.

  15. DorelTibi
    • one year ago
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    so the length is 20

  16. aacehm
    • one year ago
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    |dw:1356990749844:dw||dw:1356990808666:dw|

  17. aacehm
    • one year ago
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    see how that works?

  18. DorelTibi
    • one year ago
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    Im realy confused inorder to find the area i just have to multiply 20 and 16 and get 320

  19. aacehm
    • one year ago
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    area of a parallelogram is base times height. You correctly found the height, using the pythagorean theorem. Now, you need to figure out which one the base is. (It's the one perpendicular to the height, and it's not 20). I was giving you a picture so you could see why this particular formula works.

  20. DorelTibi
    • one year ago
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    is it 32

  21. DorelTibi
    • one year ago
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    @aacehm im i right

  22. aacehm
    • one year ago
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    yes, it's 32. I hope you understood how that worked.

  23. DorelTibi
    • one year ago
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    so the area would be 16*32

  24. DorelTibi
    • one year ago
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    yea?

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