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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
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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suzy4321Best ResponseYou've already chosen the best response.0
dw:1336213345316:dw
 one year ago

shegBest ResponseYou've already chosen the best response.1
\[{\large{perimeter = 2\times{pie}\times{r}}}\]
 one year ago

shivam_bhallaBest ResponseYou've already chosen the best response.0
@sheg means perimeter of circle. :D And one latex tip to write pi. Write as \pi
 one year ago

shegBest ResponseYou've already chosen the best response.1
@shivam_bhalla thanks a ton buddy
 one year ago

shivam_bhallaBest ResponseYou've already chosen the best response.0
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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