Question

if the circumference of a circle is 308 cm find the radius of circle

Answer 1

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Answer 2

circumference=2πr
$308cm = 2\pi \: r \\ 308 = 2 \times \frac{22}{7} \times r \\ r = \frac{308 \times 7}{2 \times 22} \\ r = 49cm$