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  • The circumference of a circle is 31.4 cm. find the radius and the area of the circle? [take \pi=3.14]

The circumference of a circle is 31.4 cm. find the radius and the area of the circle? [take \pi=3.14]

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\\ \text{Given circumference } = 31.4 \\ 2\pi \times r =31.4 \\ \\ r =\frac{31.4}{2\times 3.14}\\ =5 \\ \\ \text{Area } = \pi r^{2} \\ = 3.14\times 5^{2}\\ =78.5 \text{ sq cm}

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