Question

find the radius of the circle whose circumference is 57.2
(take Pi 22 upon 7
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Answer 1

Step-by-step explanation:

$2\pi \: r = 57.2 \\ 2 \times \frac{22}{7} \times r = 57.2 \\ r = \frac{57.2 \times 7}{22 \times 2} \\ r = 9.1cm$

Answer 2

Step-by-step explanation:

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