Respuesta :

we have the function

[tex]V(r)=4\pi r^2[/tex]

For r=4 in

substitute the given value in the function above

[tex]\begin{gathered} V(r)=4\pi\cdot(4^2) \\ V(r)=64\pi cm2 \end{gathered}[/tex]

The surface area is 64pi square centimeters