anonymous
  • anonymous
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
Mathematics
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
|dw:1336213345316:dw|
anonymous
  • anonymous
\[{\large{perimeter = 2\times{pie}\times{r}}}\]
anonymous
  • anonymous
@sheg means perimeter of circle. :D And one latex tip to write pi. Write as \pi

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anonymous
  • anonymous
@shivam_bhalla thanks a ton buddy
anonymous
  • anonymous
oqei thx
anonymous
  • anonymous
Your approach towards the problem must be to find the radius of outer circle using the formula given by @sheg and then......... @sheg , welcome :)

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