The circumference of a circle, whose area is 24.64 m2 , is :

Answer: Option C

$$\begin{array}{rl}& \because \pi R^2=24.64\\ & \iff R^2=\left(\frac{24.64}{22}\times 7\right)\\ & \iff R^2=7.84\\ & \iff R=\sqrt{7.84}\\ & \iff R=2.8m\\ & \therefore \text{Circumference :}\\ & =\left(2\times \frac{22}{7}\times 2.8\right)m\\ & =17.60m\end{array}$$