Question

Which of the following is the surface area of the right cylinder below?

Answer 1

Answer:

it is d

Step-by-step explanation:

Answer 2

Answer:

D

Step-by-step explanation:

The surface area is the area of all the surfaces. The surface area of cylinder has the formula:

$SA_{cyl}=2\pi r^2 +2\pi rh$

Where

r is radius

h is height

r is 8

h is 3

Substituting, and keeping $\pi$ as is, we have:

$SA_{cyl}=2\pi r^2 +2\pi rh\\SA_{cyl}=2\pi (8)^2 +2\pi (8)(3)\\SA_{cyl}=128\pi +48\pi\\SA_{cyl}=176\pi$

Thus,

Surface Area = $176\pi$  units squared, answer choice D is right