1 Answer

Taha Jahangir · Answer 1 · 2023-06-24T01:14:30+0000

Formula of surface area (SA) of an hemisphere:

$SA=2\pi r^2$

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:

$SA=2\pi(8)^2$

Simplifying:

$SA=2\pi\cdot(64)$
$SA=128\pi$

Answer: 120π cm²

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