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

height 3
radius 8

A. 144pie units squared
B. 192pie units squared
C. 72pie units squared
D. 176pie units squared ​

which of the following is the surface area of the right cylinder below height 3radius 8A 144pie units squared B 192pie units squaredC 72pie units squared D 176p class=

Respuesta :

Answer:

D

Step-by-step explanation:

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

[tex]SA_{cyl}=2\pi r^2 +2\pi rh[/tex]

Where

r is radius

h is height

r is 8

h is 3

Substituting, and keeping [tex]\pi[/tex] as is, we have:

[tex]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[/tex]

Thus,

Surface Area = [tex]176\pi[/tex]  units squared, answer choice D is right

Answer:

it is d

Step-by-step explanation: