How to find the circumference of concentric circles?
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To find circumference of circle, use the formula 2πr for outer circle, where r = radius of outer circle.
For circumference of smaller circle same formula will be used but put the value of r = smaller given radius.
Hope it will help you !!!
For circumference of smaller circle same formula will be used but put the value of r = smaller given radius.
Hope it will help you !!!
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