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kiss69fist23

  • 4 years ago

An outside circular ring has a circumference of 100 cm. What is the circumference of an inner ring which is 5 cm shorter in radius? Both circles have the same center. one circle inside another sharing the same center 20.0 cm 31.8 cm 56.8 cm 68.6 cm An outside circular ring has a circumference of 100 cm. What is the circumference of an inner ring which is 5 cm shorter in radius? Both circles have the same center. one circle inside another sharing the same center 20.0 cm 31.8 cm 56.8 cm 68.6 cm @Mathematics

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  1. hoblos
    • 4 years ago
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    is there any formula for circumference?

  2. kiss69fist23
    • 4 years ago
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    if there is i dont kno it haha :/ sad...but true

  3. hoblos
    • 4 years ago
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    lol

  4. abdul_shabeer
    • 4 years ago
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    68.6 cm

  5. kiss69fist23
    • 4 years ago
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    i can always count on dear shabeer to save tha day haha

  6. hoblos
    • 4 years ago
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    abdul shabeer is there any formula??

  7. abdul_shabeer
    • 4 years ago
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    Are the options rounded off ? I got the answer as 68.57142 still more

  8. abdul_shabeer
    • 4 years ago
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    Circumference of circle = \[2*\Pi*r\]

  9. sathiprakash
    • 4 years ago
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    68.6cm.....

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