gabbyalicorn
  • gabbyalicorn
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.
Mathematics
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SOLVED
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jamiebookeater
  • jamiebookeater
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Michele_Laino
  • Michele_Laino
here we have to apply this formula: \[D = \frac{C}{{3.14}} = \frac{{41}}{{3.14}} = ...cm\]
gabbyalicorn
  • gabbyalicorn
So, \[3.14 \div 41 or 41 \div 3.14 ?\]
Michele_Laino
  • Michele_Laino
it is 41 : 3.14=...

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More answers

gabbyalicorn
  • gabbyalicorn
so, ratios
Michele_Laino
  • Michele_Laino
yes!
gabbyalicorn
  • gabbyalicorn
oh yay!
gabbyalicorn
  • gabbyalicorn
then, simplify?
gabbyalicorn
  • gabbyalicorn
Wait, no it can't be simplified
Michele_Laino
  • Michele_Laino
you have to divide 41 by 3.14, what do you get?
gabbyalicorn
  • gabbyalicorn
13.0573248407
Michele_Laino
  • Michele_Laino
now you have to round off that number to the nearest unit
gabbyalicorn
  • gabbyalicorn
13.1
gabbyalicorn
  • gabbyalicorn
am i right? :D
Michele_Laino
  • Michele_Laino
the nearest unit I think is 13.0 cm
gabbyalicorn
  • gabbyalicorn
Oh, sorry. My mistake..
gabbyalicorn
  • gabbyalicorn
Thanks! :)
Michele_Laino
  • Michele_Laino
:)

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