Question

$find \: the \: radius \: \\ of \: a \: \\ circle \: whose \: circumference \: is \\ \\ \: 52.8 \: cm \: . \: ( \: take \: \pi = \frac{22}{7} \ \textless \ br /\ \textgreater \ .$


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Answer 1

circumference of a circle =2×22/7×r=51.8cm

r=51.8÷(22/7×2)

=518/10÷44/7

518/10×7/44

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