Question

Find the surface area of a sphere with a radius of 8 cm

Answer 1

Answer:

$\large\boxed{803.8\ cm^2}$

Step-by-step explanation:

The formula of a surface area of a sphere:

$S.A.=4\pi R^2$

R - radius

We have R = 8 cm. Substitute:

$S.A.=4\pi(8^2)=4\pi(64)=256\pi\ cm^2$

$\pi\approx3.14$

Substitute:

$S.A.\approx256(3.14)=803.84\ cm^2$