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suzy4321

An outside circular ring has a circumference of 90 cm. What is the circumference of an inner ring which is 8 cm shorter in radius? Both circles have the same center. i came to 39.8but im barley learning this so just making sure if its wrong don't need to explain just say its wrong thx

  • one year ago
  • one year ago

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  1. suzy4321
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    |dw:1336213345316:dw|

    • one year ago
  2. sheg
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    \[{\large{perimeter = 2\times{pie}\times{r}}}\]

    • one year ago
  3. shivam_bhalla
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    @sheg means perimeter of circle. :D And one latex tip to write pi. Write as \pi

    • one year ago
  4. sheg
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    @shivam_bhalla thanks a ton buddy

    • one year ago
  5. suzy4321
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    oqei thx

    • one year ago
  6. shivam_bhalla
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    Your approach towards the problem must be to find the radius of outer circle using the formula given by @sheg and then......... @sheg , welcome :)

    • one year ago
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