Surface area SA: [tex]4\pi r^2[/tex]
Circumference C: [tex]2\pi r[/tex] dividing this you get [tex]7=\pi r[/tex] and [tex]r= \frac{7}{\pi}[/tex]
Now let's input the radius [tex]r[/tex] into the Surface area formula...
[tex]4\pi r^2\rightarrow 4\pi(\frac{7}{\pi})^2=4\pi(\frac{49}{\pi^2})=\frac{196}{\pi}[/tex]
