Question

@StudyGurl14 So surface area again in terms of pi.

Answer 1

Okay remember. Formula for surface area of cylinder:
Lateral Area + area of bases
\(\large 2\pi rh+2r^2\pi\)

Answer 2

Diameter = 2
So...radius = 1
height = 9

Answer 3

I'm getting 2 * pi * 2 * 9 + 2 * 4 pi right?

Answer 4

where did you get the one from?

Answer 5

right you simplify.

Answer 6

ohhh okay. Yeah

Answer 7

hold on, it would actually be...
\(\large 2\pi(1)(9)+2\pi(1)^2\)

Answer 8

because the radius is 1, not 2

Answer 9

okay right

Answer 10

now...
\(\large 2(9)\pi+2(1)\pi\rightarrow 18\pi+2\pi= ???\)

Answer 11

Do I multiply 18 by 2 or add them?

Answer 12

add then.

Answer 13

add

Answer 14

alright 20 pi.

Answer 15

yep

Answer 16

i have to go now and eat lunch. Can you handle the rest?

Answer 17

You are the best!! I wish I could repay you for putting up with me and all my questions. Thank you!

Answer 18

Yes thank you!

Answer 19

:)