3 years ago

FIND THE SURFACE AREA HELP ASAP GET BRAINLISTS

Mathematics

1 answer:

3241004551 [841]3 years ago

4 0

Answer:

$\large\boxed{a.\ 7200\pi\ mm^2}$

Step-by-step explanation:

The formula of a surface area of a cylinder:

$S.A.=2\pi r(r+H)$

r - radius

H - height

We have r = 40mm and H = 50mm. Substitute:

$S.A.=2\pi(40)(40+50)=80\pi(90)=7200\pi\ mm^2$

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