Formula of surface area (SA) of an hemisphere:
[tex]SA=2\pi r^2[/tex]
where r represents the radius of the hemisphere.
In the image, we are given the radius, r = 8 cm. Then, we just have ot replace this value in the formula and solve:
[tex]SA=2\pi(8)^2[/tex]
Simplifying:
[tex]SA=2\pi\cdot(64)[/tex][tex]SA=128\pi[/tex]
Answer: 120π cm²
