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anonymous

  • one year ago

Find the area of the figure

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  1. anonymous
    • one year ago
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  2. mathstudent55
    • one year ago
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    Here are two ways of doing it: 1. Divide the figure into 3 rectangles. Find the area of each rectangle and add them together. 2. Find the area of the green figure as if it were a full rectangle with no white part missing. Then find the area of the missing white part and subtract from the large green rectangle.

  3. mathstudent55
    • one year ago
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    Do these two methods make sense to you?

  4. anonymous
    • one year ago
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    they do .I feel as if the second part would be quicker and easier

  5. mathstudent55
    • one year ago
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    I agree. Let's do the second method. The large green rectangle is actually a square with side 5. What is the area of a square with side 5?

  6. anonymous
    • one year ago
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    25

  7. mathstudent55
    • one year ago
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    Great. The small missing square inside has side 2. What is the area of a square of side 2?

  8. anonymous
    • one year ago
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    4

  9. mathstudent55
    • one year ago
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    Great. What is 25 - 4 ?

  10. anonymous
    • one year ago
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    21

  11. mathstudent55
    • one year ago
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    There is your answer. Good job!

  12. mathstudent55
    • one year ago
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    Actually, now that I saw the figure more carefully, this is the only way we could have done this problem with the given info. We were not given enough info to find the areas of the three rectangles that add up to the green area.

  13. anonymous
    • one year ago
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    it was super easy. thanks !

  14. mathstudent55
    • one year ago
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    Great. I'm glad you understood it.

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