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juciystar234 Group Title

The sheet of plywood at the right has a piece cut from one corner.What is the area of the plywood?

  • one year ago
  • one year ago

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  1. juciystar234 Group Title
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    |dw:1347408268242:dw|

    • one year ago
  2. jiji501 Group Title
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    The area of the whole rectangle is 4 x8 = 32 You can now split up your shape into two rectangles. 8 x 2= 16 5 x 4 = 20 20+16 = 36 This makes no sense.

    • one year ago
  3. juciystar234 Group Title
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    That is the closest I could draw

    • one year ago
  4. juciystar234 Group Title
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    Haha ok

    • one year ago
  5. juciystar234 Group Title
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    Let me try and work it out

    • one year ago
  6. asnaseer Group Title
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    work out the area of a large outer rectangle then subtract from this the area of the rectangle in the top right corner

    • one year ago
  7. asnaseer Group Title
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    you will need to work these out first: |dw:1347408608107:dw|

    • one year ago
  8. juciystar234 Group Title
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    Ok im working it out

    • one year ago
  9. juciystar234 Group Title
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    So isn't the piece missing a 2 by 3?

    • one year ago
  10. asnaseer Group Title
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    yes :)

    • one year ago
  11. juciystar234 Group Title
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    Ok so now what so I do?

    • one year ago
  12. asnaseer Group Title
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    what is the area of the piece that was cut out?

    • one year ago
  13. juciystar234 Group Title
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    6

    • one year ago
  14. juciystar234 Group Title
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    6ft. I mean

    • one year ago
  15. asnaseer Group Title
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    correct - 6 ft^2 now subtract 6 from the area of the original whole rectangle

    • one year ago
  16. juciystar234 Group Title
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    would it be 64 - 6 = 58?

    • one year ago
  17. asnaseer Group Title
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    where did you get 64 from?

    • one year ago
  18. juciystar234 Group Title
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    because 4x8 twice from before you cut out that piece of plywood

    • one year ago
  19. asnaseer Group Title
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    why "twice"?

    • one year ago
  20. juciystar234 Group Title
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    |dw:1347408897668:dw|

    • one year ago
  21. juciystar234 Group Title
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    Or is it just multiplied once

    • one year ago
  22. juciystar234 Group Title
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    like 4x8 once - 6

    • one year ago
  23. asnaseer Group Title
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    what is the area of a rectangle with length L and width W?

    • one year ago
  24. juciystar234 Group Title
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    Before you cut out the piece?

    • one year ago
  25. asnaseer Group Title
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    I think you may be getting confused with the perimeter of a rectangle which is the total distance all around it.

    • one year ago
  26. juciystar234 Group Title
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    Yeah maybe.. :P

    • one year ago
  27. asnaseer Group Title
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    Area of rectangle of length L and width W = L * W Perimeter of rectangle of length L and width W = 2(L + W)

    • one year ago
  28. juciystar234 Group Title
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    So then 80?

    • one year ago
  29. juciystar234 Group Title
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    Yeah I forgot how to do this from last year.... :P

    • one year ago
  30. juciystar234 Group Title
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    But I think I'm catching on! :)

    • one year ago
  31. asnaseer Group Title
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    so, with the extra acquired knowledge, what will be the original rectangles area (before the piece was cut out)?

    • one year ago
  32. juciystar234 Group Title
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    80?

    • one year ago
  33. asnaseer Group Title
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    are you sure - look again and what we said above...

    • one year ago
  34. juciystar234 Group Title
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    ok

    • one year ago
  35. asnaseer Group Title
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    what is the length and width of the original rectangle?

    • one year ago
  36. juciystar234 Group Title
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    So wasnt it 8x8=64 4x4=16 64+16=80?

    • one year ago
  37. asnaseer Group Title
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    |dw:1347409394610:dw|

    • one year ago
  38. juciystar234 Group Title
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    OHHHHHHHHHHHHHHHH!!! OK!! :D Sooo 32?

    • one year ago
  39. asnaseer Group Title
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    :) that is correct

    • one year ago
  40. asnaseer Group Title
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    now just subtract from this the area of the piece that was cut out

    • one year ago
  41. juciystar234 Group Title
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    so? 26?

    • one year ago
  42. asnaseer Group Title
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    peeeeeerrrrfect!

    • one year ago
  43. juciystar234 Group Title
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    Yahooo!!!!

    • one year ago
  44. asnaseer Group Title
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    I'm sure with some practice you'll become a maths wizard very soon

    • one year ago
  45. juciystar234 Group Title
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    Im in honors im liike 2 grades ahead!!

    • one year ago
  46. asnaseer Group Title
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    that is fantastic - keep up the good work my friend :)

    • one year ago
  47. juciystar234 Group Title
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    Thankx you 2

    • one year ago
  48. asnaseer Group Title
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    yw :)

    • one year ago
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