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anonymous

  • one year ago

PLZ HELP WILL MEDAL AND FAN \Use the squares to help you find a reasonable range for the area of the circle. Show your work. A circle is placed on a grid of squares, each one unit by one unit. A square that is 5 units by 5 units fits completely inside the circle. The circle fits completely inside a square that is 9 units on each side.

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  1. anonymous
    • one year ago
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    @paki

  2. JoannaBlackwelder
    • one year ago
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    Ok, what is the area of the square that the circle fits inside?

  3. anonymous
    • one year ago
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    25

  4. Flvs.net
    • one year ago
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    I'll help.

  5. JoannaBlackwelder
    • one year ago
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    And what is the area of the other square?

  6. anonymous
    • one year ago
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    what other square

  7. JoannaBlackwelder
    • one year ago
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    The one that is 9 units on each side

  8. anonymous
    • one year ago
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    i see 7 x 7

  9. JoannaBlackwelder
    • one year ago
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    |dw:1437673370828:dw| Sorry for the poorly drawn squares

  10. JoannaBlackwelder
    • one year ago
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    Oh, in the words, it says 9 units

  11. anonymous
    • one year ago
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    oh never mind, 81

  12. JoannaBlackwelder
    • one year ago
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    But yeah, in the pic, it looks like just over 7 to me as well.

  13. JoannaBlackwelder
    • one year ago
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    So, what do you think that tells us about the range of the area of the circle?

  14. anonymous
    • one year ago
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    um I am nor sure

  15. JoannaBlackwelder
    • one year ago
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    Well, since a 25 units^2 square fits completely inside the circle, it has to be greater than 25 units^2

  16. JoannaBlackwelder
    • one year ago
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    Does that idea make sense?

  17. anonymous
    • one year ago
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    so it has to be greater than 25 but less than 81

  18. JoannaBlackwelder
    • one year ago
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    Yep

  19. JoannaBlackwelder
    • one year ago
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    If we go by the 9 in the words

  20. anonymous
    • one year ago
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    so it could be 50

  21. JoannaBlackwelder
    • one year ago
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    Yeah, that is one option.

  22. anonymous
    • one year ago
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    oh okay thanks

  23. JoannaBlackwelder
    • one year ago
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    You're welcome :-)

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