[tex]\begin{gathered} Surface\text{ area =4}\pi r^2 \\ \pi\approx3.14 \\ r=\frac{8\operatorname{cm}}{2}=4\operatorname{cm} \\ Surface\text{ area =4}\cdot(3.14)\cdot(4cm)^2 \\ Surface\text{ area =4}\cdot(3.14)\cdot(16cm^2) \\ Surface\text{ area =200.96}cm^2\approx201cm^2 \\ \text{The surface area is }201cm^2 \end{gathered}[/tex]
