Question

The diameter of a circular garden is 9.8 m. Find its circumference and area. (take π = 22/7)

Answer 1

$$\begin{gathered} \mathrm{Diameter}\mathrm{of}\mathrm{circular}\mathrm{garden},\mathrm{d}=9.8\mathrm{m} \\ \mathrm{Radius}\mathrm{of}\mathrm{circular}\mathrm{garden},\mathrm{r}=\frac{\mathrm{d}}{2}=\frac{9.8}{2}=4.9\mathrm{m} \\ \mathrm{Circumference}\mathrm{of}\mathrm{garden}=2\mathrm{\pi r} \\ =2\times \frac{22}{7}\times 4.9 \\ =30.8\mathrm{m} \\ \mathrm{Area}\mathrm{of}\mathrm{garden}={\mathrm{\pi r}}^2 \\ =\frac{22}{7}\times 4.9\times 4.9 \\ =75.46{\mathrm{m}}^2 \end{gathered}$$