Question

the circumference of a circle is 308 cm find the radius as well as the area of the circle.

Answer 1

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Answer 2

$here \: circumference = 308cm \\ 2 \: \pi \: r = 308 \\ 2 \times \frac{22}{7} \times r = 308 \\ therefore \: r = \frac{308 \times 7}{2 \times 22} = 49 \\ so \: radius \: = \: 49cm \\ now \: area = {(\pi \: r)}^{2} = \frac{22}{7} \times 49 \times 49 \\ therefore \: area \: = 7886 {cm}^{2}$
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