Question

Calculate the area and the perimeter of a circle of it diameter is 12cm

Answer 1

Dear student,

$$\begin{gathered} Given:Diameterofcircle=12cm \\ radius\left(r\right)=\frac{diameter}{2} \\ r=6 \\ Now,Areaofcircle={\mathrm{\pi r}}^2 \\ =\frac{22}{7}\times 6^2 \\ =\mathbf{113}\mathbf{.}\mathbf{14}\mathbf{}{\mathbf{cm}}^{\mathbf{2}} \\ \mathrm{Perimeter}\mathrm{of}\mathrm{circle}\left(\mathrm{circumference}\right)=2\mathrm{\pi r} \\ =2\times 3.14\times 6 \\ =\mathbf{37}\mathbf{.}\mathbf{68}\mathbf{}\mathbf{cm} \end{gathered}$$

Regards