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anonymous

  • one year ago

Find the area of the following shape. You must show all work to receive credit.

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  1. anonymous
    • one year ago
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  2. anonymous
    • one year ago
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    @jim_thompson5910

  3. jim_thompson5910
    • one year ago
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    did you try breaking it up into rectangles and triangles?

  4. anonymous
    • one year ago
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    Yes, I was trying to break it up into triangles, and I've determined that there's four but I wasn't sure.

  5. jim_thompson5910
    • one year ago
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    here is one way

  6. anonymous
    • one year ago
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    Alright, that helps a lot more.

  7. anonymous
    • one year ago
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    Do we have to find the area of all of them now?

  8. jim_thompson5910
    • one year ago
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    yes, then add up the individual areas

  9. anonymous
    • one year ago
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    Without numbers on the shape, how do I solve for the area?

  10. jim_thompson5910
    • one year ago
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    use the grid to figure out the base and height for each rectangle or triangle each tick is 1 unit

  11. jim_thompson5910
    • one year ago
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    for example, the largest rectangle in my drawing is 5x5 since there are 5 grid ticks along the width and height

  12. anonymous
    • one year ago
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    I still don't understand.

  13. anonymous
    • one year ago
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    Like I see what you mean, but i still don't know how to get the area.

  14. jim_thompson5910
    • one year ago
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    that rectangle would have an area of L*W = 5*5 = 25, agreed?

  15. anonymous
    • one year ago
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    Yes.

  16. anonymous
    • one year ago
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    So the one next to it would be 9?

  17. anonymous
    • one year ago
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    Would the areas be 25, 9, 4, 4?

  18. jim_thompson5910
    • one year ago
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    |dw:1441691000027:dw|

  19. jim_thompson5910
    • one year ago
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    ok we already have this 5x5 piece |dw:1441691100105:dw|

  20. jim_thompson5910
    • one year ago
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    what's the area of this piece? |dw:1441691117214:dw|

  21. anonymous
    • one year ago
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    I got 9 for that one.

  22. anonymous
    • one year ago
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    Because there was 3 grid ticks

  23. jim_thompson5910
    • one year ago
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    I see that it's a 2x3 rectangle, try again |dw:1441691253886:dw|

  24. anonymous
    • one year ago
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    So, 6?

  25. jim_thompson5910
    • one year ago
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    yes

  26. anonymous
    • one year ago
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    Alright. :)

  27. jim_thompson5910
    • one year ago
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    ok how about this rectangle? |dw:1441691305662:dw|

  28. anonymous
    • one year ago
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    Was I right for the other two?

  29. anonymous
    • one year ago
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    I got 4 for that one.

  30. jim_thompson5910
    • one year ago
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    nope it's not 4

  31. anonymous
    • one year ago
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    Is it just 2?

  32. jim_thompson5910
    • one year ago
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    yep 2

  33. anonymous
    • one year ago
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    And the other one is 2 also?

  34. jim_thompson5910
    • one year ago
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    |dw:1441691447505:dw|

  35. jim_thompson5910
    • one year ago
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    fill out the drawing with the other areas you got

  36. anonymous
    • one year ago
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    Were we just doing the rectangles?

  37. jim_thompson5910
    • one year ago
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    we also need to do the triangles too

  38. anonymous
    • one year ago
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    |dw:1441691342927:dw|

  39. jim_thompson5910
    • one year ago
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    the ones I'm crossing out are the ones that are incorrect |dw:1441691610965:dw|

  40. anonymous
    • one year ago
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    4?

  41. jim_thompson5910
    • one year ago
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    |dw:1441691644765:dw|