Question

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Answer 1

Answer:

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Answer 2

given Question:

$9 + c = 2 \pi \: r$

given values:

$c = 12.56 \\ \pi = 3.14$

on putting these values we get:

$9 + 12.56 = 2 \times 3.14 \times r$

$21.56 = 6.28r$

$r = \frac{12.56}{6.28}$

$r = 2$