Question

the circumference of two concentric rings are 88cm and 66cm respectively. find the width between the rings.​

Answer 1

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➡The solution is above in the attachment.

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Answer 2

$step \: by \: step \: explanation \: \\ given \\ circumference \: of \: inner \: circle = 66cm \\ 2\pi \times r1 = 66cm \\ r 1= \frac{33}{\pi} \\ r 1= \frac{33}{22} \times 7 \\ r1 = 10.5cm \\ \\ now \: circumference \: of \: outer \: ring = 88cm \\ 2\pi \times r2 = 88cm \\ r2 = \frac{44}{\pi } \\ r 2= \frac{44}{22} \times 7 \\ r2 = 14cm \\ so \: distace \: would \: be \\ r2 - r1 \\ 14 - 10.5 \\ = 3.5 \: ans$