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gabbyalicorn

  • one year ago

A dog’s chew toy is a rubber ring with a circumference of 41 cm. What is the diameter of the chew toy, rounded to the nearest centimeter? Use 3.14 to approximate pi.

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  1. Michele_Laino
    • one year ago
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    here we have to apply this formula: \[D = \frac{C}{{3.14}} = \frac{{41}}{{3.14}} = ...cm\]

  2. gabbyalicorn
    • one year ago
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    So, \[3.14 \div 41 or 41 \div 3.14 ?\]

  3. Michele_Laino
    • one year ago
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    it is 41 : 3.14=...

  4. gabbyalicorn
    • one year ago
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    so, ratios

  5. Michele_Laino
    • one year ago
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    yes!

  6. gabbyalicorn
    • one year ago
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    oh yay!

  7. gabbyalicorn
    • one year ago
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    then, simplify?

  8. gabbyalicorn
    • one year ago
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    Wait, no it can't be simplified

  9. Michele_Laino
    • one year ago
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    you have to divide 41 by 3.14, what do you get?

  10. gabbyalicorn
    • one year ago
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    13.0573248407

  11. Michele_Laino
    • one year ago
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    now you have to round off that number to the nearest unit

  12. gabbyalicorn
    • one year ago
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    13.1

  13. gabbyalicorn
    • one year ago
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    am i right? :D

  14. Michele_Laino
    • one year ago
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    the nearest unit I think is 13.0 cm

  15. gabbyalicorn
    • one year ago
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    Oh, sorry. My mistake..

  16. gabbyalicorn
    • one year ago
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    Thanks! :)

  17. Michele_Laino
    • one year ago
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    :)

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